e=" text-align: center;">

e="text-align: center; "> KDS晶振,ef="/Products/DSK321STD.html" title="DSK321STD晶振" target="_blank">DSK321STD晶振,1XZA032768AD19,32.768K有源晶振

e="text-align: center; "> e="font-size:16px">erif",="" tahoma,="" verdana,="" helvetica"="">erif",="" tahoma,="" verdana,="" helvetica"="">1XZA032768AD19晶振产品尺寸图

e="text-align: center; "> ef="/Products/DSA321SDN.html" title="DSA321SDN晶振" target="_blank">

e="text-align: center; "> ef="/KDScrystal.html" title="晶振" target="_blank">

e="text-align: center; "> ef="/Products/DSK321STD.html" target="_blank">e="DSK321STD 32.768K CCT" alt="DSK321STD 32.768K CCT" />e="font-size: 16px;">erif",="" tahoma,="" verdana,="" helvetica"="">erif",="" tahoma,="" verdana,="" helvetica"="">1XZA032768AD19晶振产品电气表

e="text-align: center; "> e="DSB211SDN 16.368M DQ" alt="DSB211SDN 16.368M DQ" />

e="text-align: center; "> e="font-size:16px">关于e="font-size: 16px;">erif",="" tahoma,="" verdana,="" helvetica"="">erif",="" tahoma,="" verdana,="" helvetica"="">KDS晶振,DSK321STD晶振,1XZA032768AD19,32.768K有源晶振  产品e="font-size:16px">安装的注意事项

e="text-align: center; "> 终端/陆上布局/金属屏蔽孔
ef="/QuartzCrystal.html" title="石英晶振" target="_blank">

e="text-align: center; ">

e="text-align: center; "> 1端子A通孔不在底部（安装侧）。
2土地图案布局/金属掩模孔以下土地图案为参考设计。电气特性应满足安装在这片土地上的要求。在测试用地和安装用地不相连的范围内，可以改变接地方式。
e="1XXB38400MCB|KDS晶振|DSB221SDN晶振|温补晶振" alt="1XXB38400MCB|KDS晶振|DSB221SDN晶振|温补晶振" width="524" height="271" />
对电特性没有任何影响。面罩厚度建议为0.12毫米。

e="text-align: center; "> e="font-size:16px">包装条件
胶带包装
（1）压花胶带格式及尺寸
（2）卷筒数量:最多2000个/卷
（3）胶带规格
不缺产品。
（4）卷筒规格见图3
包装
产品用防静电袋包装。
*湿度敏感度等级：IPC/JEDEC标准J-STD-033/1级
无需干燥包装，无需重新储存后烘烤。

e="text-align: center; ">
包装箱
最多10卷/包装箱。但是，在少于10卷的情况下，它由任何盒子容纳。
盒子里的空间用垫子填满了。

e="text-align: center; "> ef="www.smdcrystal.com" title="KDS晶振" target="_blank">KDS 晶振即是日本大真空株式会社（DASHINKU CORP）,成立于 1951 年,至今已有 50 多年的历史,是全球领先的三大晶振制造商之一,其制造工厂主要分布在日本本土、中国、泰国、印度尼西亚等十多个制造中心,KDS 大真空集团总公司位于日本兵库县加古川,在泰国,印度尼西亚,台湾,中国天津这些大城市均有生产工厂,其中天津工厂是全球晶振行业最大的单体制造工厂,也是全球最大的 TF 型晶振制造工厂.

e="text-align: center; "> 首先非常的感谢你长期以来对【日本大真空株式会社】,KDS 晶振品牌的支持与厚爱.在此郑重声明,本集团以下简称（KDS）在中国的代理商除了北京中国电子研究院,广州电子研究所,【ef="/contact.html" title="泰河电子" target="_blank">泰河电子】,香港 KDS办事处,台湾KDS办事处,是正规的代理销售企业,其余地区以及公司,个人所销售的KDS产品均不能保证是原装正品,请你选择正规渠道定制货品.

e="font-size:16px">TCXO晶振ECS-TXO-25CSMV-AC-260-BN-TR适用于无线局域网应用

e="font-family:simsun;font-size:16px">ef="/ECScrystal.html" title="ECS晶振" target="_blank">e="color:#ff0000;font-size:18px">ECS晶振扩展了符合AEC-Q200标准的ECS-327ATQMV MultiVolt TM振荡器系列，增加了两个部件号，以涵盖更多应用。两个新的部件号是 ECS-327ATQMV-BP-TR，在 -40e="font-family:simsun">℃至+105e="font-family:simsun">℃下提供±50ppm的稳定性， ECS-327ATQMV-CN-TR 在 -40e="font-family:simsun">℃~ 85e="font-family:simsun">℃下提供±25ppm的稳定性。 

e="font-size:16px">32.768kHz低功耗晶体振荡器ECS-327ATQMV-AS-TR适用于通用微处理器

e="font-family:simsun;font-size:16px">内置频率可调的32.768kHz晶体单元和DTCXO
e="font-family:simsun;font-size:16px">接口类型:I2C总线
e="font-family:simsun;font-size:16px">接口电压范围:2.5V至5.5V
e="font-family:simsun;font-size:16px">温度补偿电压范围:2.0V至5.5V
e="font-family:simsun;font-size:16px">计时电压范围:1.6V至5.5V
e="font-family:simsun;font-size:16px">自动电源切换功能:自动切换到备用电源
e="font-family:simsun;font-size:16px">通过监控VDD电压供电
e="font-family:simsun;font-size:16px">中断输出:每分钟或每秒钟唤醒
e="font-family:simsun;font-size:16px">闹铃中断:日、日期、小时、分钟
e="font-family:simsun;font-size:16px">自动重复唤醒定时器中断

e="font-family:calibri">e="宋体"> 在当今的高性能系统中，需要一个出色的时钟源。随着专用集成电路（ASICe="宋体">）的速度和性能达到更高的限制，分配该时钟源以驱动多个设备的需求变得更加困难。由于相关的快速边沿速率，系统中部署的较高频率导致长e="Calibri">PCBe="宋体">迹线表现得像传输线。保持平衡系统需要适当的端接技术来实现应用中的跟踪路由。本应用笔记将重点介绍推荐的终止技术e="Calibri">;e="宋体">关于输出负载的评论，并提供一些设计师要考虑的布局指南。

e="font-family:calibri">传输线理论简介

e="font-family:calibri">通常，大多数时钟源具有低阻抗输出。当这些器件用于驱动具有大阻抗的负载时，存在阻抗不匹配。根据应用条件，此阻抗不匹配会导致负载产生电压反射，从而产生时钟波形中的步进，振铃以及过冲和下冲。这可能通过降低负载处的时钟信号，错误的数据时钟和产生更高的系统噪声而导致系统性能不佳。

e="font-family:calibri">为了减少电压反射，需要正确终止信号迹线。适当终止的设计考虑因素可以用两个语句来概括：

e="font-family:calibri">1.e="宋体">使负载阻抗与线路阻抗相匹配

e="font-family:calibri">2.e="宋体">使源阻抗与线路阻抗匹配

e="font-family:calibri">e="宋体">对于大多数设计，第一种说法是首选方法，因为它消除了返回时钟源的反射。这样可以减少噪音，电磁干扰（EMIe="宋体">）和射频干扰（e="Calibri">RFIe="宋体">）。

e="font-family:calibri">下图显示了阻抗不匹配对时钟源的影响

eight="253" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps1.jpg">e="font-family:calibri"> 

e="font-family:calibri">常用终止技术

e="font-family:calibri">e="宋体">如上所述，为了减少电压反射，必须正确地终止迹线。 e="宋体">传输线的四种基本端接技术是串联，并联，戴维宁和ACe="宋体">。

e="font-family:calibri">系列终止

e="font-family:calibri">e="宋体">串联终端消除了时钟源的反射，有助于保持信号质量。 e="宋体">这最适合驱动少量负载的TTLe="宋体">器件，因为时钟输出阻抗小于传输线特性阻抗。 图e="Calibri">1e="宋体">显示了一系列终端。 电阻尽可能靠近时钟源放置。 e="Calibri">Re="宋体">的典型设计值为e="Calibri">10Ωe="宋体">至e="Calibri">75Ωe="宋体">。

eight="218" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps2.jpg">e="font-family:calibri"> 

e="font-family:宋体">Re="宋体">的值可以大于阻抗差，以便产生稍微过阻尼的状态并且仍然消除来自时钟源的反射。

e="font-family:宋体">系列终端的主要优点是：

e="font-family:宋体">1.e="宋体">简单，只需要一个电阻器

e="font-family:宋体">2.e="宋体">功耗低

e="font-family:宋体">3.e="宋体">在驱动高容性负载时提供电流限制e="Calibri">;e="宋体">这还可以通过减少接地反弹来改善抖动性能

e="font-family:宋体">系列终止的主要缺点是：

e="font-family:宋体">1.e="宋体">增加负载信号的上升和下降时间e="Calibri">;e="宋体">这在一些高速应用中可能是不可接受的

e="font-family:宋体">2.e="宋体">无法驱动多个负载

e="font-family:宋体">平行和戴维宁终结

e="font-family:宋体">接下来的三种终端技术可提供更清晰的时钟信号，并消除负载端的反射。这些终端应尽可能靠近负载放置。

e="font-family:宋体">e="宋体">图2e="宋体">描绘了并行终端。并联终端消耗的功率最大，不建议用于低功率应用。它也可能改变占空比，因为下降沿将比上升沿更快。它比串联终端具有一个优点，即上升和下降时间的延迟大约是一半。

eight="161" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps3.jpg">e="font-family:calibri"> 

e="font-family:宋体">e="宋体">如图3e="宋体">所示，戴维宁终端将比并联终端消耗更少的功率，并且通常用于e="Calibri">PECLe="宋体">应用，e="Calibri">50e="宋体">Ω线路匹配至关重要。 e="Calibri">Re="宋体">的总值等于传输线的特征阻抗。 如果需要过阻尼状态，则e="Calibri">Re="宋体">的总值可略小于特征阻抗。 戴维宁终端的主要缺点是每条线路需要两个电阻器，并且在终端附近需要两个电源电压。 建议不要将此端接用于e="Calibri">TTLe="宋体">或e="Calibri">CMOSe="宋体">电路。

eight="190" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps4.jpg">e="font-family:calibri"> 

e="font-family:宋体">ACe="宋体">终止

e="font-family:宋体">ACe="宋体">端接，如图e="Calibri">4e="宋体">所示，在并联支路中增加了一个串联电容。 由于e="Calibri">RCe="宋体">时间常数，电容会增加时钟源的负载和延迟，但在稳态条件下将消耗很少或没有功率。 通常不建议使用此终端，因为它会通过增加传播延迟时间来降低时钟信号的性能。 为了保持有效终止，e="Calibri">C Le="宋体">的值不应小于e="Calibri">50pFe="宋体">。 较大的e="Calibri">C Le="宋体">值将允许时钟边沿的快速转换，但随着电容器值的增加，较高的电流电平将通过，从而导致功耗的增加。 选择大于走线阻抗的e="Calibri">R Le="宋体">值，以考虑负载输入阻抗的泄漏。

eight="179" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps5.jpg">e="font-family:calibri"> 

e="font-family:宋体">输出负载简介

e="font-family:宋体">e="宋体">应注意不要使时钟源过载。 e="宋体">如果使用单个时钟源来驱动多个负载，则如果总负载超过时钟源的驱动能力，则会发生波形劣化。

e="font-family:宋体">e="宋体">过载的一些常见症状是波形削波，对称不平衡，信号幅度减小以及上升和下降时间值的变化。 e="宋体">通常随着时钟频率的增加，源驱动更高负载的能力将降低。 e="宋体">请务必参考时钟源规范以获得最大负载能力。

e="font-family:宋体">下图显示了重载对时钟源的影响。

eight="263" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps6.jpg">e="font-family:calibri"> 

e="font-family:宋体">通用时钟输出类型

e="font-family:宋体">CTSe="宋体">时钟振荡器设计已经开发出来，具有各种封装选项，输入电压和输出类型。

e="font-family:宋体">HCMOSe="宋体">和e="Calibri">HCMOS / TTLe="宋体">兼容

e="font-family:宋体">e="宋体">今天的CTSe="宋体">设计提供“双兼容”振荡器，它们是能够驱动e="Calibri">TTLe="宋体">应用的e="Calibri">HCMOSe="宋体">输出类型。 由于转换时间较短，这些设备固有地具有更大的过冲和欠冲。 这可能不适合具有严格e="Calibri">EMIe="宋体">要求的旧e="Calibri">TTLe="宋体">设计。

e="font-family:宋体">CTSe="宋体">生产两种流行的e="Calibri">HCMOS / TTLe="宋体">兼容时钟振荡器e="Calibri">CB3 / CB3LVe="宋体">和型号e="Calibri">636e="宋体">。

e="font-family:宋体">e="宋体">下图显示了典型的HCMOSe="宋体">测试负载配置和波形参数。

eight="223" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps7.jpg">e="font-family:calibri"> 

e="font-family:宋体">LVPECLe="宋体">和e="Calibri">LVDS

e="font-family:宋体">e="宋体">与HCMOSe="宋体">逻辑技术相比，e="Calibri">CTS LVPECLe="宋体">和e="Calibri">LVDSe="宋体">逻辑输出设计具有许多优势。

e="font-family:宋体">LVPECLe="宋体">和e="Calibri">LVDSe="宋体">技术从正电源获得其工作功率，从而实现与负载点处的e="Calibri">HCMOSe="宋体">逻辑接口的必要兼容性。 这些逻辑输出还具有：

e="font-family:宋体">1.e="宋体">降低系统抖动e="Calibri">; e="宋体">由于较小的特征过渡区域

e="font-family:宋体">2.e="宋体">上升和下降时间更快

e="font-family:宋体">3.e="宋体">提供差分输出e="Calibri">; e="宋体">减少排放至关重要

e="font-family:宋体">4.e="宋体">能够直接驱动e="Calibri">50e="宋体">Ω传输线

e="font-family:宋体">5.e="宋体">降低高频时的电源消耗

e="font-family:宋体">CTS Model 635e="宋体">提供两种输出类型的选项。

e="font-family:宋体">e="宋体">下图显示了典型的LVPECLe="宋体">和e="Calibri">LVDSe="宋体">测试负载配置和波形参数

eight="329" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps8.jpg">e="font-family:calibri"> 

e="font-family:宋体">布局指南

e="font-family:宋体">e="宋体">在印刷电路板布局过程中采用良好的设计实践将最小化先前讨论的信号劣化。 PCBe="宋体">设计的一些常见指南是：

e="font-family:宋体">1.e="宋体">将时钟源物理定位在尽可能靠近负载的位置

e="font-family:宋体">2.e="宋体">限制时钟信号的走线长度

e="font-family:宋体">3.e="宋体">不要将时钟信号靠近电路板边缘

e="font-family:宋体">4.e="宋体">尽量避免在时钟信号路由中使用过孔。 过孔会改变走线阻抗，从而引起反射。

e="font-family:宋体">5.e="宋体">不要在电源和接地层上布设信号走线

e="font-family:宋体">6.e="宋体">避免在轨迹中出现直角弯曲，如果可能，请保持直线行程。 如果需要弯曲，请使用两个e="Calibri">45e="宋体">°角或使用圆形弯曲（最佳）e="Calibri">.

eight="135" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps9.jpg">e="font-family:宋体"> 

e="font-family:宋体">7. V CCe="宋体">与时钟源地之间的去耦电容对于降低可能传输到时钟信号的噪声至关重要。 这些电容必须尽可能靠近e="Calibri">V CCe="宋体">引脚。

e="font-family:宋体">8.e="宋体">为避免串扰，请在多个时钟源和高速开关总线之间保持适当的间隔。

e="font-family:宋体">9.e="宋体">差分跟踪路由应尽可能接近，以获得高耦合系数。 路由的长度应相等，以避免阻抗不匹配，从而导致不同的传播延迟时间。

e="font-family:宋体">10.e="宋体">使用单个时钟源驱动多个负载时，请考虑拆分路由。 使各个布线长度尽可能相等。

eight="213" src="file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml31280\wps10.jpg">e="font-family:calibri"> 

e="font-family:宋体">结论

e="font-family:宋体">e="宋体">本应用笔记介绍了使用驱动各种负载的时钟源的应用的正确终端技术。 e="宋体">它还概述了用于生成可靠应用程序设计的布局考虑因素 e="宋体">所有这些技术都力求最大限度地减少降低时钟信号的条件，从而导致系统性能不佳。

e=" text-align: center;">

ef="/" title="KDS晶振" target="_blank">KDS 晶振即是日本大真空株式会社（DASHINKU CORP）,成立于 1951 年,至今已有 50 多年的历史,是全球领先的三大晶振制造商之一,其制造工厂主要分布在日本本土、中国、泰国、印度尼西亚等十多个制造中心,KDS 大真空集团总公司位于日本兵库县加古川,在泰国,印度尼西亚,台湾,中国天津这些大城市均有生产工厂,其中天津工厂是全球晶振行业最大的单体制造工厂,也是全球最大的 TF 型晶振制造工厂.

首先非常的感谢你长期以来对【日本大真空株式会社】,KDS 晶振品牌的支持与厚爱.在此郑重声明,本集团以下简称（KDS）在中国的代理商除了北京中国电子研究院,广州电子研究所,【ef="/contact.html" title="泰河电子" target="_blank">泰河电子】,香港 KDS办事处,台湾KDS办事处,是正规的代理销售企业,其余地区以及公司,个人所销售的KDS产品均不能保证是原装正品,请你选择正规渠道定制货品.

e=" text-align: center;"> 1XTV26000AAD|ef="/KDScrystal.html" title="KDS晶振" target="_blank">KDS晶振|株式会社大真空|VC-TCXO振荡器

e="text-align:center;font-size:16px">erif",="" tahoma,="" verdana,="" helvetica"="">1XTV26000AAD晶振产品尺寸图

ef="/Products/DSA321SDN.html" title="DSA321SDN晶振" target="_blank">

ef="/Products/DSA321SCL.html" title="DSA321SCL晶振" target="_blank">e="1XTV26000AAD CC" alt="1XTV26000AAD CC" />

e="font-size: 16px; text-align: center;">1XTV26000AAD晶振产品电气表

e="1XTV26000JBADQ" alt="1XTV26000JBADQ" />

e="font-size:16px">关于e="font-size: 16px; text-align: center;">1XTV26000AAD压控温补振荡器产品e="font-size:16px">安装的注意事项

终端/陆上布局/金属屏蔽孔
ef="/QuartzCrystal.html" title="石英晶振" target="_blank">

e="1XTW16368MAA TCXOCP" alt="1XTW16368MAA TCXOCP" />

1端子A通孔不在底部（安装侧）。
2土地图案布局/金属掩模孔以下土地图案为参考设计。电气特性应满足安装在这片土地上的要求。在测试用地和安装用地不相连的范围内，可以改变接地方式。
e="1XTW16368MAA TCXOCPAZ" alt="1XTW16368MAA TCXOCPAZ" />
对电特性没有任何影响。面罩厚度建议为0.12毫米。

e="font-size:16px">包装条件
胶带包装
（1）压花胶带格式及尺寸
（2）卷筒数量:最多2000个/卷
（3）胶带规格
不缺产品。
（4）卷筒规格见图3
包装
产品用防静电袋包装。
*湿度敏感度等级：IPC/JEDEC标准J-STD-033/1级
无需干燥包装，无需重新储存后烘烤。

包装箱
最多10卷/包装箱。但是，在少于10卷的情况下，它由任何盒子容纳。
盒子里的空间用垫子填满了。

e="font-family:宋体">e="宋体">从早期的无线电到雷达，以及现在的数字计算，每个电路都需要一个时钟或心跳来指导其功能。时序控制从低功率到高精度的各种应用中的处理速率，数据连接和RFe="宋体">传输频带。时间已成为一个多元化的工程领域。考虑到可以设计时钟电路的多种方式以及每年引入该行业的许多进步，工程师应该定期重新考虑其时序考虑因素。以下是基本计时设备列表以及使用它们的最佳时间。

e="font-family:宋体">1.LCe="宋体">谐振器

e="font-family:宋体">LCe="宋体">谐振器是最简单和常用的定时电路，由放大器，电感器和电容器组成。主要优点包括低成本和易于集成，特别是在高频率下。然而，它不是非常准确，并且随温度变化很大。这种可变性提供了一个额外的属性：宽拉范围。因此，在开发小型或高度集成的压控振荡器（e="Calibri">VCOe="宋体">）时，e="Calibri">LCe="宋体">是首选的谐振器。这些振荡器在e="Calibri">PCBe="宋体">或片上设计用于跟踪或锁定其他频率。由于温度可以使频率e="Calibri">+/- 10,000 ppme="宋体">或更高，因此e="Calibri">LCe="宋体">不够精确，无法单独运行。

e="font-family:宋体">2.e="宋体">ef="/CeramicResonator.html" title="陶瓷谐振器" target="_blank">陶瓷谐振器

e="font-family:宋体">陶瓷谐振器e="宋体" style="font-family:宋体">的主要优点是成本。如果您正在寻找最低成本和稳定的解决方案，那么这项技术可以帮助您实现这一目标。不要指望在整个温度范围内稳定性小于e="font-family:宋体">+/- 1000ppme="宋体" style="font-family:宋体">。该谐振器成本低，但不能用于精确或甚至部分精确的定时。玩具，低端设备和低端e="Calibri" style="font-family:宋体">MCUe="宋体" style="font-family:宋体">应用程序等通用应用程序可以摆脱这种不精确的程度。如果您需要更高的精度，其他谐振器将帮助您。

e="font-family:宋体">3.e="宋体">ef="/EPSONcrystal.html" title="石英晶体" target="_blank">石英晶体

e="font-family:宋体">e="宋体">石英晶体因其自补偿温度稳定性，出色的初始精度和适中的成本而成为时间之王。作为谐振器，它具有高Qe="宋体">值，可实现极低的在线噪声。批量生产已经对这些设备的精度和成本进行了微调，因此价格适中的晶体现在可以实现e="Calibri">+/- 20ppme="宋体">至e="Calibri">+/- 50ppme="宋体">的总体精度。它具有出色的稳定性，是当今许多连接协议的理想时间基础，从e="Calibri">Wi-Fie="宋体">，e="Calibri">Zigbeee="宋体">和蓝牙到汽车e="Calibri">LIN / CANe="宋体">，以太网，e="Calibri">UARTe="宋体">和工业应用。定时e="Calibri">MCUe="宋体">和使用石英晶体的处理器提供的精度可以满足常见的连接协议。但是，有些协议需要更高的性能。e="Calibri">晶体e="宋体">的精度可以提高。

e="font-family:宋体">4.e="宋体">ef="/OSCillator.html" title="石英晶体振荡器" target="_blank">石英晶体振荡器（e="Calibri">XOe="宋体">）

e="font-family:宋体">e="宋体">石英晶体振荡器集成了振荡器芯片和石英晶体。它提供了石英的准确性和低噪声优势，但降低了电路板走线引起的可变性。在某些情况下，振荡器芯片还将基本石英频率乘以应用所需的频率。在非常低噪声的系统中使用XOe="宋体">而不是裸石英晶体是必要的，例如高速通信，光学互连，光学模块，测试和测量以及先进的e="Calibri">RFe="宋体">应用。e="Calibri">XOe="宋体">以高频率提供低噪声，这对于使用普通晶体来说是难以实现的。高性能系统中使用的顶级频率如e="Calibri">100MHze="宋体">，e="Calibri">156.25MHze="宋体">或e="Calibri">312.5MHze="宋体">需要使用e="Calibri">XOe="宋体">提供的差分e="Calibri">LVPECLe="宋体">，e="Calibri">LVDSe="宋体">，e="Calibri">HCSLe="宋体">或e="Calibri">CMLe="宋体">信号进行调理。

e="font-family:宋体">5.e="宋体">ef="/TCXOcrystal.html" title="温度补偿晶振" target="_blank">温度补偿晶振（e="Calibri">TCXOe="宋体">）

e="font-family:宋体">e="宋体">虽然XOe="宋体">提供缓冲和频率转换，但它们跟踪石英晶体毛坯的精度。若干通信和电信应用，例如点对点e="Calibri">RFe="宋体">，e="Calibri">GNSS / GPSe="宋体">，移动电话，e="Calibri">LPWANe="宋体">网关和其他精密e="Calibri">RFe="宋体">连接系统，需要在整个温度范围内具有e="Calibri">+/- 0.5ppme="宋体">至e="Calibri">+/- 2.5ppme="宋体">的频率稳定性。e="Calibri">Stratum IIIe="宋体">需要e="Calibri">+/- 0.28ppme="宋体">的稳定性。裸露的石英不够稳定，不易达到低于e="Calibri">10ppme="宋体">的稳定性。e="Calibri">TCXOe="宋体">经历了一个制造流程，可以测量和校准其频率偏差。明显的缺点是成本。请记住，没有什么比终端系统中不可操作的数据链路更昂贵。

e="font-family:宋体">6.e="宋体">烤箱控制的ef="/KDSSPXO.html" title="晶体振荡器" target="_blank">晶体振荡器（e="Calibri">OCXOe="宋体">）

e="font-family:宋体">OCXOe="宋体">可以达到几乎不可想象的精度水平e="Calibri">+/- 0.1ppme="宋体">至e="Calibri">0.1ppbe="宋体">或更高的温度。e="Calibri">TCXOe="宋体">技术不仅使用温度校准。e="Calibri">OCXOe="宋体">通过添加二阶控制 e="Calibri">- e="宋体">石英毛坯的温度来实现稳定性。在启动时，e="Calibri">OCXOe="宋体">将石英毛坯加热到比环境温度高约e="Calibri">10e="宋体">度，并将温度控制在该水平，从而最大限度地减少温度扰动。在许多情况下，e="Calibri">OCXOe="宋体">还具有机械防护冲击和振动功能，使终端系统能够实现最大时钟精度以满足要求。与军用和雷达相关的许多应用以及用于移动电话的基站收发信台（e="Calibri">BTSe="宋体">）需要这种精确度。快速移动车辆中的先进高精度e="Calibri">GPSe="宋体">也需要高精度。

e="font-family:宋体">7.e="宋体">微电子机械系统（e="Calibri">MEMSe="宋体">）

e="font-family:宋体">MEMSe="宋体">技术与石英并行发展。e="Calibri">MEMSe="宋体">基于硅而非石英晶体，具有小型化和抗冲击和振动的优点。由于与e="Calibri">MEMSe="宋体">谐振器相关的复杂性，e="Calibri">MEMSe="宋体">的主要缺点是成本。虽然它可以用于晶体，e="Calibri">XOe="宋体">和e="Calibri">TCXOe="宋体">涵盖的各种应用中，但是当需要高耐久性时，e="Calibri">MEMSe="宋体">是最佳的。此外，在尺寸为e="Calibri">1.6 x 1.2mme="宋体">的超小尺寸下，e="Calibri">MEMSe="宋体">与晶体竞争非常激烈。可穿戴设备，无线充电板，工业控制，机器人，无人机和e="Calibri">AR / VRe="宋体">等应用可以充分利用e="Calibri">MEMSe="宋体">的耐用性和尺寸。

e="word-spacing:-1.5px"> FOX CRYSTAL晶振公司成立于1979年，美国ef="/FOXcrystal.html" title="福克斯晶振" target="_blank" style="word-spacing:-1.5px">福克斯晶振e="word-spacing:-1.5px">电子有限公司总部位于美国的佛罗里达州的迈尔斯堡。福克斯电子公司的成立使得该公司成为美国领先的高精度，高可靠性的频率元器件制造供应商。按当时的情况来看，ef="http://www.taiheth.com/FOXcrystal/" title="FOX晶振" target="_blank" style="word-spacing:-1.5px">FOX晶振e="word-spacing:-1.5px">公司还是处于一个小型的家族式石英晶体和振荡器的供应商。

e="word-spacing:-1.5px">美国FOX晶振公司在过去的32年中持续增长，其中一个重要因素离不开其研发部门。福克斯晶振的工程师开发出了几百种产品，而且这些产品为晶体和振荡器的性能，精度以及可靠性带来了认可的新标准。并可以不断的增长业务的需求，缩短了交付晶体的周期。

FOX CRYSTAL Crystal Company was founded in 1979, and Fox Crystal Electronics Co., Ltd. is headquartered in Fort Myers, Florida, USA. The establishment of Fox Electronics has made the company a leading supplier of high-precision, high-reliability frequency components in the United States. According to the situation at the time, FOX Crystal is still a supplier of small family quartz crystals and oscillators.

The US FOX Crystal Company has continued to grow over the past 32 years, and one of the important factors is inseparable from its R&D department. Engineers at Fox Crystal have developed hundreds of products that bring new standards of acceptance for the performance, accuracy and reliability of crystals and oscillators. And can continue to grow business needs, shortening the cycle of delivering crystals.

e="word-spacing:-1.5px">关于HOSONICef="http://www.taiheth.com/6035important/" title="鸿星晶振" target="_blank" style="word-spacing:-1.5px">鸿星晶振e="word-spacing:-1.5px">公司可能挺多人也知道，HOSONIC CRYSTAL鸿星晶振股份有限公司成立于1979年在台湾设立登记成立公司，登记的资本为新台币200万元。公司成立之后便于台湾投入石英晶体研发制造.1994年新增资本3400万元，开始大力研发生产石英晶体振荡器，石英晶振，ef="/SMDcrystal.html" title="贴片晶振" target="_blank" style="word-spacing:-1.5px">贴片晶振e="word-spacing:-1.5px">，压控振荡器的研发生产。

e="word-spacing:-1.5px">

About ef="/HOSONICcrystal.html" title="HOSONIC CRYSTAL" target="_blank">HOSONIC CRYSTAL Company may know that HOSONIC CRYSTAL was established in 1979 to establish a registered company in Taiwan with a registered capital of NT$2 million. After the establishment of the company, it is convenient for Taiwan to invest in the research and development of quartz crystal. In 1994, the company added 34 million yuan of capital, and began to vigorously research and develop the production and production of quartz crystal oscillator, quartz crystal oscillator, patch crystal oscillator and voltage controlled oscillator.

e width="100%" border="0" cellspacing="0" cellpadding="0" class="ke-zeroborder" microsoft="" yahei";"=""> enter> eight="41" /> enter>

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> ef="" target="_blank">eight="60" border="0" alt="NAOD 75(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOD 75 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 1.0 to 125.0 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 7*5*1.6 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOH 53(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOH 53 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 1.0 to 125.0 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 5*3.2*1.3 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOK 32(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOK 32 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 2.0 to 54.0 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 3.2*2.5*1.2 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOL 22(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOL 22 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 2.0 to 50 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 2*2.5*0.95 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NADD 75(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NADD 75 
eight="11" border="0" align="absmiddle" /> e="font-size: 11px; color: rgb(102, 102, 102);"> LVDS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 77.76 MHz ~ 622.08 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 7*5*1.9 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAPD 75(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAPD 75 
eight="11" border="0" align="absmiddle" /> e="font-size: 11px; color: rgb(102, 102, 102);"> LVPECL e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 75 MHz ~ 622.08 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 7*5*1.9 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAVD-6(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAVD-6 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 1.0 MHz to 52.0 MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 7*5*1.8 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAVH-6(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAVH-6 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 12MHz ~ 35.328MHz e="font-size: 11px; color: rgb(102, 102, 102);"> 5*3.2*1.5

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOD 75(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOD 75 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 32.768 KHz e="font-size: 11px; color: rgb(102, 102, 102);"> 7*5*1.6 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOH 53(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOH 53 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 32.768 KHz e="font-size: 11px; color: rgb(102, 102, 102);"> 5*3.2*1.5 eight="40" />eight="40" />

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder"> eight="60" border="0" alt="NAOK 32(Please click image to view data sheet)" /> e> e="line-height: 16px; font-family: PMingLiU; color: rgb(53, 118, 162);"> NAOK 32 e="font-size: 11px; color: rgb(102, 102, 102);"> CMOS e="font-size: 11px; padding-right: 2px; padding-left: 3px; color: rgb(102, 102, 102);"> 32.768 KHz e="font-size: 11px; color: rgb(102, 102, 102);"> 3.2*2.5*1.2 eight="40" />eight="40" />

e="Microsoft YaHei">

e width="656" border="0" align="center" "="" cellpadding="0" cellspacing="0" microsoft="" yahei";"="" class="ke-zeroborder" style="border-collapse: collapse; border-spacing: 0px; font-size: inherit;"> e="font: 12px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170);"> e width="70" height="60" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder" style="border-collapse: collapse; border-spacing: 0px; font-size: inherit;"> e="font: 12px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170);"> eight="60" border="0" alt="NAON 21(Please click image to view data sheet)" style="border: 0px;" /> e> e="font: 12px/16px PMingLiU; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170); color: rgb(53, 118, 162);"> NAON 21 
eight="11" border="0" align="absmiddle" style="border: 0px;" /> e="font: 11px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170); color: rgb(102, 102, 102);"> CMOS e="font: 11px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px 2px 0px 3px; border: 1px dotted rgb(170, 170, 170); color: rgb(102, 102, 102);"> 2.0 to 50 MHz e="font: 11px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170); color: rgb(102, 102, 102);"> 2.05*1.65*0.75 e="font: 12px/1.5 "sans serif", tahoma, verdana, helvetica; margin: 0px; padding: 0px; border: 1px dotted rgb(170, 170, 170);"> e="border: 0px;" />

ef="/TXCcrystal.html" title="TXC晶振" target="_blank">

ef="/TXCcrystal.html" title="TXC晶振" target="_blank">TXC晶振有分好多種類型,溫補晶體振蕩器,壓控振蕩器,恒溫晶體振蕩器OCXO振蕩器.以下泰河電子為大家整理提供已分好類別的TXC溫補振蕩器及VCXO振蕩器選型表,以供大家選型參考使用.雖然TXC晶振的型號眾多,但是並不會難記.

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="font-size: 14px;">TXC压控振荡器VCXO系列 - CMOS Model Frequency Stability
(-40~85ºC) Voltage Output Oscillation Dimensions ef="" target="_blank">e="b6u" width="105" height="60" border="0" id="b6u" title="6U Specifications (pdf)" /> e="color: rgb(51, 51, 153);">6U 1 ~ 59MHz ±50ppm 3.3V, 5V CMOS Fundamental 7 x 5 x 1.3mm e="bbr" width="105" height="60" border="0" id="bbr" title="BR Specifications (pdf)" /> e="color: rgb(51, 51, 153);">BR 60 ~ 200MHz ±50ppm 3.3V CMOS Fundamental 7 x 5 x 1.3mm e="bcr" width="105" height="60" border="0" id="bcr" title="CR Specifications (pdf)" /> e="color: rgb(51, 51, 153);">CR 50 ~ 200MHz ±50ppm 3.3V CMOS Fundamental 5 x 3.2 x 1.2mm                

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="font-size: 14px;">erif",="" tahoma,="" verdana,="" helvetica;="" word-spacing:="" -1.5px;"="">TXC压控振荡器VCXO系列 - ef="/LVDScrystal.html" title="差分晶振" target="_blank">差分晶振

e="font-size: 14px;">

一般来说单相输出称之为晶体振荡器,并以正弦波或者CMOS波型(矩型波)输出为主要代表.

剪切的正弦波输出具有类似圆角矩形的波形,并常用于RF电路,因为它抑制了不必要的谐波.TCXO(温度补偿晶体振荡器)被称为削波正弦波输出的产物.由于CMOS波输出是对应于数字信号处理的逻辑电子的信号输出,所以有利于数字信号的传送,并用于时钟,如CPU等.

Model Frequency Stability
(-40~85ºC) Voltage Output Oscillation Dimensions ef="" target="_blank">e="gbj" width="105" height="60" border="0" id="gbj" title="BJ Specifications (pdf)" /> e="color: rgb(51, 51, 153);">BJ 60 ~ 200MHz ±50ppm 3.3V LVPECL Fundamental 7 x 5 x 1.3mm e="gbk" width="105" height="60" border="0" id="gbk" title="BK Specifications (pdf)" /> e="color: rgb(51, 51, 153);">BK 60 ~ 700MHz ±50ppm 3.3V LVPECL PLL 7 x 5 x 1.3mm e="gbn" width="105" height="60" border="0" id="gbn" title="BN Specifications (pdf)" /> e="color: rgb(51, 51, 153);">BN 60 ~ 200MHz ±50ppm 3.3V LVDS Fundamental 7 x 5 x 1.3mm e="gbp" width="105" height="60" border="0" id="gbp" title="BP Specifications (pdf)" /> e="color: rgb(51, 51, 153);">BP 60 ~ 700MHz ±50ppm 3.3V LVDS PLL 7 x 5 x 1.3mm ef="" target="_blank">e="gcj" width="105" height="60" border="0" id="gcj" title="CJ Specifications (pdf)" /> e="color: rgb(51, 51, 153);">CJ 60 ~ 200MHz ±50ppm 3.3V LVPECL Fundamental 5 x 3.2 x 1.2mm e="gcn" width="105" height="60" border="0" id="gcn" title="CN Specifications (pdf)" /> e="color: rgb(51, 51, 153);">CN 50 ~ 200MHz ±50ppm 3.3V LVDS Fundamental 5 x 3.2 x 1.2mm

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="font-size: 14px;">erif",="" tahoma,="" verdana,="" helvetica;="" word-spacing:="" -1.5px;"="">TXC温补振荡器TCXO系列 - Basic

什么是ef="/TCXOcrystal.html" title="温补晶振" target="_blank">温补晶振。来自温度传感器的输出信号用于通过补偿网络产生校正电压。 校正电压施加到VCXO中的变容二极管。 电容变化可以补偿晶体的频率与温度特性.

Model Frequency Stability
(-30~85ºC) Operating Temp Voltage Output Dimensions e="b7q" width="105" height="60" border="0" id="b7q" title="7Q Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7Q 13 ~ 52MHz ±2ppm -40~+85ºC 2.4V-3.3V Clipped
Sinewave 3.2 x 2.5 x 1mm e="b7l" width="105" height="60" border="0" id="b7l" title="7L Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7L 13 ~ 52MHz ±2ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 2.5 x 2 x 0.8mm ef="" target="_blank">e="b7z" width="105" height="60" border="0" id="b7z" title="7Z Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7Z 26 ~ 52MHz ±2ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 2.0 x 1.6 x 0.8mm e="b8p" width="105" height="60" border="0" id="b8p" title="8P Specifications (pdf)" /> e="color: rgb(51, 51, 153);">8P 26 ~ 52MHz ±2ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 1.6 x 1.2 x 0.6mm                

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="font-size: 14px;">erif",="" tahoma,="" verdana,="" helvetica;="" "="">e="word-spacing: -1.5px;">TXC温补振荡器TCXO系列 - GPS专用 Model Frequency Stability
(-30~85ºC) Operating Temp Voltage Output Dimensions e="g7q" width="105" height="60" border="0" id="g7q" title="7Q Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7Q 13 ~ 52MHz ±0.5ppm -40~+85ºC 2.4V-3.3V Clipped
Sinewave 3.2 x 2.5 x 1mm e="g7l" width="105" height="60" border="0" id="g7l" title="7L Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7L 13 ~ 52MHz ±0.5ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 2.5 x 2 x 0.8mm e="g7z" width="105" height="60" border="0" id="g7z" title="7Z Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7Z 26 ~ 52MHz ±0.5ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 2.0 x 1.6 x 0.8mm ef="/OscillatorCrystal.html" target="_blank">e="g8p" width="105" height="60" border="0" id="g8p" title="8P Specifications (pdf)" /> e="color: rgb(51, 51, 153);">8P 26 ~ 52MHz ±0.5ppm -40~+85ºC 1.8V-3.3V Clipped
Sinewave 1.6 x 1.2 x 0.6mm

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="font-size: 14px;">erif",="" tahoma,="" verdana,="" helvetica;="" "="">e="word-spacing: -1.5px;">TXC温补振荡器TCXO系列 - 高精度振荡器 Model Frequency Stability
(-40~85ºC) Voltage Output Dimensions e="p7n" width="105" height="60" border="0" id="p7n" title="7N Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7N 10 ~ 52MHz ±0.28ppm 2.7V-5.5V Clipped
Sinewave
/CMOS 7 x 5 x 2mm e="p7p" width="105" height="60" border="0" id="p7p" title="7P Specifications (pdf)" /> e="color: rgb(51, 51, 153);">7P 10 ~ 52MHz ±0.28ppm 2.7V-5.5V Clipped
Sinewave
/CMOS 5 x 3.2 x 1.2mm

e width="630" align="center" cellpadding="2" cellspacing="0" style="font-size: 12px; width: 729px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif;"> eight="30"> e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="arial, helvetica, clean, sans-serif">erif",="" tahoma,="" verdana,="" helvetica;="" "="" style="font-size:12px">TXCef="/OCXOcrystal.html" title="恒温晶体振荡器" target="_blank">恒温晶体振荡器OCXO系列e="font-size:12px"> - CMOS e="arial, helvetica, clean, sans-serif" style="font-size:14px">Model e="arial, helvetica, clean, sans-serif" style="font-size:14px">Frequency e="arial, helvetica, clean, sans-serif" style="font-size:14px">Stability e="arial, helvetica, clean, sans-serif" style="font-size:14px">Voltage e="arial, helvetica, clean, sans-serif" style="font-size:14px">Output e="arial, helvetica, clean, sans-serif" style="font-size:14px">Dimensions e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="hoc" width="105" height="60" border="0" id="hoc" title="OC Specifications (pdf)" /> e="arial, helvetica, clean, sans-serif">OC e="arial, helvetica, clean, sans-serif">10 ~ 25MHz e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="font-size:12px">±5ppb
e="font-size:12px">(0~70ºC) e="arial, helvetica, clean, sans-serif">5, 12V e="arial, helvetica, clean, sans-serif">CMOS e="arial, helvetica, clean, sans-serif">36 x 27mm e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="arial, helvetica, clean, sans-serif">ef="/OCXOcrystal.html" target="_blank">e="hob" width="105" height="60" border="0" id="hob" title="OB Specifications (pdf)" /> e="arial, helvetica, clean, sans-serif">OB e="arial, helvetica, clean, sans-serif">10 ~ 25MHz e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="font-size:12px">±10ppb
e="font-size:12px">(0~75ºC) e="arial, helvetica, clean, sans-serif">3.3, 5V e="arial, helvetica, clean, sans-serif">CMOS e="arial, helvetica, clean, sans-serif">25 x 25mm e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="hoa" width="105" height="60" border="0" id="hoa" title="OA Specifications (pdf)" /> e="arial, helvetica, clean, sans-serif">OA e="arial, helvetica, clean, sans-serif">10 ~ 40MHz e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="font-size:12px">±200ppb
e="font-size:12px">(-30~70ºC) e="arial, helvetica, clean, sans-serif">3.3, 5V e="arial, helvetica, clean, sans-serif">CMOS e="arial, helvetica, clean, sans-serif">e="font-size:14px">e="arial, helvetica, clean, sans-serif" style="font-size:12px">20 x 20mm

希華晶體公司眾所周知的是它是壹家臺灣品牌的晶體頻率元器件制造。關於希華晶體我們知道多壹點的就是SIWARD晶體公司是世界領先的石英晶振與晶體振蕩器的解決方案商之壹。為了滿足全球不斷增長對電信的需求，希華晶體也在做著不同的改變，希華晶體壹直在改進自身的生產技術以及服務質量。臺灣希華晶振公司成立於1988年，對全球的石英晶體，振蕩器以及濾波器的研發，生產與銷售。產品應用於移動通信，平板電腦，GPS定位系統，計算機時鐘等產品。

e width="100%" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder" style="font-size: 12px; color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; word-spacing: 1px;"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif;"> e width="100%" border="1" align="center" cellpadding="5" cellspacing="0" bordercolor="#CCCCCC"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">系列 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">照片 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">尺寸 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">频率范围 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">eight="24" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STB-2520

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/103/Pro_Pic_Small/STO-2520-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5 x 2.0 x 0.8

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">16~52 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STB-3225

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/33/Pro_Pic_Small/TXO92-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2 x 2.5 x 0.9

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">8~52 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">TXO83

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/31/Pro_Pic_Small/TXO83-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">5.0 x 3.2 x 1.05

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">6~45 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-2520B

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/65/Pro_Pic_Small/STO-2520B-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5 x 2.0 x 0.9

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2~55 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-3225B

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/49/Pro_Pic_Small/STO-3225B-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2 x 2.5 x 1.0

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5~55 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-5032B

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/50/Pro_Pic_Small/STO-5032B-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">5.0 x 3.2 x 1.05

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5~55 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-7050B

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/51/Pro_Pic_Small/STO-7050B-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">7.0 x 5.0 x 1.4

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5~55 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-2016A

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/72/Pro_Pic_Small/STO-2016A-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">2.0 x 1.6 x 0.8

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">16.368~33.6 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-2520A

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/73/Pro_Pic_Small/STO-2520A-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5 x 2.0 x 0.8

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">16.368~38.4 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STO-3225A

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/74/Pro_Pic_Small/STO-3225A-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2 x 2.5 x 1.0

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">16.368~27.456 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e>

e width="100%" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder" style="font-size: 12px; color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; word-spacing: 1px;"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif;"> e width="100%" border="1" align="center" cellpadding="5" cellspacing="0" bordercolor="#CCCCCC"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">系列 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">照片 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">尺寸 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">频率范围 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">eight="24" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STV-2520

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/104/Pro_Pic_Small/STO-2520-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">2.5 x 2.0 x 0.8

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">16~52MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">STV-3225

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/34/Pro_Pic_Small/TXO92-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2 x 2.5 x 0.9

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">8~52 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">VTX83

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/32/Pro_Pic_Small/TXO83-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">5.0 x 3.2 x 1.05

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">6~45 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e>

e width="100%" border="0" align="center" cellpadding="0" cellspacing="0" class="ke-zeroborder" style="font-size: 12px; color: rgb(85, 85, 85); font-family: Arial, Helvetica, sans-serif; word-spacing: 1px;"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif;"> e width="100%" border="1" align="center" cellpadding="5" cellspacing="0" bordercolor="#CCCCCC"> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">系列 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">照片 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">尺寸 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">频率范围 e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="font-size:10pt;color:#000000;font-weight:bold">eight="24" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">SCV-3225

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/39/Pro_Pic_Small/SCV-3225-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">3.2 x 2.5 x 0.9

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">1.5~54 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">VCX95

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/21/Pro_Pic_Small/VCX95-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">5.0 x 3.2 x 1.1

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">1.5~61.440 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">VCX91

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/22/Pro_Pic_Small/VCX91-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">7.0 x 5.0 x 1.6

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">1.5~54 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> e="line-height:15px">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 80px;"> e="vertical-align:inherit">e="vertical-align:inherit">VCX92

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 80px;"> er="0" src="http://www.siward.com.tw/uploads/Pro/23/Pro_Pic_Small/VCX91-S.jpg" width="80" /> e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible; width: 100px;">

e="word-break: break-all; vertical-align: middle; overflow: visible; width: 100px;"> e="vertical-align:inherit">e="vertical-align:inherit">7.0 x 5.0 x 1.6

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85); word-break: break-all; text-align: center; vertical-align: middle; overflow: visible;">

e="word-break: break-all; vertical-align: middle; overflow: visible;"> e="vertical-align:inherit">e="vertical-align:inherit">1.5~54 MHz

e="line-height: 18px; font-family: Arial, Helvetica, sans-serif; color: rgb(85, 85, 85);"> ef="" target="_blank" style="font-family:arial, helvetica, sans-serif">er="0" src="http://www.siward.com.tw/cn/images/pdf.png" />
e>

ef="http://www.epsoncrystal.com/SIWARDcrystal.html" title="SIWARD Crystal" target="_blank">SIWARD Crystal Company is well known for its manufacture of crystal frequency components under one Taiwan brand. We know that SIWARD Crystal is one of the world's leading quartz oscillator and crystal oscillator solutions. In order to meet the growing global demand for telecommunications, SIWARD Crystal is also making different changes. Sihua Crystal has been improving its production technology and service quality. Taiwan SIWARD CRYSTAL Co., Ltd. was founded in 1988. It develops, produces and sells quartz crystals, oscillators and filters all over the world. Products used in mobile communications, tablet computers, GPS positioning systems, computer clocks and other products.

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e=" text-indent: 28px;"> e="font-family:宋体">今天2019e="font-family:宋体">年2e="font-family:宋体">月14e="font-family:宋体">日是一年一度大家口中所谓的”e="font-family:宋体">情人节”,e="font-family:宋体">也可以说是”e="font-family:宋体">情人劫”e="font-family:宋体">吼.e="font-family:宋体">从字面的意思上来讲并不是情侣夫妻之间的节日,e="font-family:宋体">而是情人过的节.e="font-family:宋体">所以,e="font-family:宋体">大家还是那么高兴又那么期待的要过情人节吗?

e=" text-indent: 28px;"> e="font-family:宋体">其实说起这个情人节的来源,e="font-family:宋体">真的,e="font-family:宋体">它并非是我们中国的节日,e="font-family:宋体">而是西方国家的传统节日之一.e="font-family:宋体">情人节又叫圣瓦伦丁节或者圣华伦泰节.(e="font-family:宋体">好长的名字,e="font-family:宋体">读起来又贼拗口).e="font-family:宋体">起源于基督教.e="font-family:宋体">原本的意思是男女间相互送花,e="font-family:宋体">巧克力,e="font-family:宋体">贺卡以及表达爱意或者友好的日子.e="font-family:宋体">晚餐约会通常代表了情侣关系的发展关键.e="font-family:宋体">然后各国的商家借此商机做活动,e="font-family:宋体">再慢慢的也成为了各国青年人喜爱的日子.e="font-family:宋体">情人节便开始流行起来.

e=" text-indent: 28px;"> e="font-family:宋体">但,e="font-family:宋体">我们不能在每天都过着安稳日子的时候忘记了那些革命的艰辛.e="font-family:宋体">我们应该多去了解一些历史.e="font-family:宋体">比如说国内,e="font-family:宋体">都出现了一些什么大事情.

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> e="font-family:arial, sans-serif;color:#191919"> e="border:1px none windowtext;padding:0px">1912e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">孙中山辞去临时大总统一职

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> ef="http://www.taiheth.com" title="中国人正确过2月14日的方式" target="_blank">e="孙中山辞去临时大总统一职" alt="孙中山辞去临时大总统一职" width="616" height="478" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">106e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1912e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日e="font-family:arial, sans-serif;color:#191919">(e="color:#191919">辛亥年腊月廿七e="font-family:arial, sans-serif;color:#191919">)e="color:#191919">，孙中山辞去临时大总统一职。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1935e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">蒋介石在庐山答日本《朝日新闻》记者

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">83e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1935e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，蒋介石在庐山答日本《朝日新闻》记者问时称：e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">中日两国不仅在东亚大局上看来有提携之必要，即为世界大局设想，亦非提携不可。e="font-family:arial, sans-serif;color:#191919">”“e="color:#191919">中国不但无排日之行动思想，亦无排日之必要。e="font-family:arial, sans-serif;color:#191919">”

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1949e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">李宗仁派和平使团与中共谈判

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">69e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1949e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，上海e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">和平使者团e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">颜惠庆、邵力子、章士钊等e="font-family:arial, sans-serif;color:#191919">16e="color:#191919">人受李宗仁之托，以私人资格乘飞机到达北平，与中共方面商谈国事。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1949e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">美国谋求台湾独立失败

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">69e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1949e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，美驻华参赞莫成德自南京秘密飞往台北，游说台湾省主席陈诚e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">自立e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">。陈诚不从。美方又想以孙立人替陈诚。孙毕业于美国弗吉尼亚军事学院，是国民党军队中留美出身的唯一高级将领，时任台湾防卫司令，但孙对蒋亦无二心。美拉孙计划一厢情愿。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1950e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">《中苏友好同盟互助条约》在莫斯科签订

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="1950年2月14日 《中苏友好同盟互助条约》在莫斯科签订" alt="1950年2月14日 《中苏友好同盟互助条约》在莫斯科签订" width="387" height="293" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">68e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1950e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，经过毛泽东、周恩来同斯大林、维辛斯基会谈，两国政府在莫斯科签订《中苏友好同盟互助条约》，同年e="font-family:arial, sans-serif;color:#191919">4e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">11e="color:#191919">日起生效，有效期e="font-family:arial, sans-serif;color:#191919">30e="color:#191919">年。双方还签订《中苏关于中国长春铁路、旅顺口及大连的协定》、《中苏关于贷款给中华人民共和国的协定》。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1958e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">周恩来出访朝鲜，中国政府决定撤军。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">60e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1958e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，周恩来率我国政府代表团访问朝鲜，协商撤军一事。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1963e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">中央美术展览馆建成

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">55e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1963e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，中央美术展览馆e="font-family:arial, sans-serif;color:#191919">(e="color:#191919">中国美术馆e="font-family:arial, sans-serif;color:#191919">)e="color:#191919">由毛泽东主席题写e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">中国美术馆e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">馆额并正式开放，是新中国成立以后的国家文化标志性建筑。主体大楼为仿古阁楼式，黄色琉璃瓦大屋顶，四周廊榭围绕，具有鲜明的民族建筑风格。主楼建筑面积e="font-family:arial, sans-serif;color:#191919">18000e="color:#191919">多平方米 e="color:#191919">，一至五层楼共有e="font-family:arial, sans-serif;color:#191919">17e="color:#191919">个展览厅，展览总面积e="font-family:arial, sans-serif;color:#191919">8300e="color:#191919">平方米；e="font-family:arial, sans-serif;color:#191919">1995e="color:#191919">年新建现代化藏品库，面积e="font-family:arial, sans-serif;color:#191919">4100e="color:#191919">平方米。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1972e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">我国与墨西哥建立外交关系

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">46e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1972e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，墨西哥同中国建交。建交后，两国关系发展顺利。墨历任总统均在任内访华，中国e="font-family:arial, sans-serif;color:#191919">**e="color:#191919">主席、政府总理等领导人先后访墨。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1981e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">邓小平为英国培格曼出版公司编辑出版的《邓小平副主席文集》作序

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">37e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1981e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，由英国培格曼出版公司编辑出版的这本文集，收集了邓小平e="font-family:arial, sans-serif;color:#191919">1956e="color:#191919">年到e="font-family:arial, sans-serif;color:#191919">1979e="color:#191919">年的部分讲话，内容涉及政治、科学、教育、文艺等几个方面。从e="font-family:arial, sans-serif;color:#191919">50e="color:#191919">年代中期到e="font-family:arial, sans-serif;color:#191919">70e="color:#191919">年代末，世界历史在错综复杂的矛盾和激烈的动荡中发展，社会主义中国和中国共产党也走过了自己的很不寻常的道路。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1983e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">中共中央发出《关于加强党员教育工作的通知》

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">35e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1983e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，中共中央发出《关于加强党员教育工作的通知》。《通知》指出：认真学习党的十二大制定的社会主义现代化建设的纲领和大会通过的新党章，是今后一个时期党员教育的主要内容，是提高党员素质、提高党组织战斗力和实现党风根本好转的重要一环，是全党的一件大事。抓好这件大事，要党委负责，全党动手。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1986e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">国家自然科学基金委员会成立。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">32e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">国务院于e="font-family:arial, sans-serif;color:#191919">1986e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日批准成立国家自然科学基金委员会，作为管理国家自然科学基金的国务院直属事业单位，自然科学基金委根据国家发展科学技术的方针、政策和规划，有效运用国家自然科学基金，支持基础研究，坚持自由探索，发挥导向作用，发现和培养科学技术人才，促进科学技e="font-family:arial, sans-serif;color:#191919">.

e="margin-bottom: 0px; text-indent: 32px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> e="color:#191919">然后国外的e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日这天e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">也发生了很多大事件e="font-family:arial, sans-serif;color:#191919">.e="color:#191919">最令大家关注的可能会是情人节的由来e="font-family:arial, sans-serif;color:#191919">.e="color:#191919">其实e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">这个节日说好听点就是为了祭奠瓦伦丁e="font-family:arial, sans-serif;color:#191919">.e="color:#191919">说难听点就是e="font-family:arial, sans-serif;color:#191919">...e="color:#191919">后面大伙自个补充e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">我怕被群殴e="font-family:arial, sans-serif;color:#191919">…e="color:#191919">其实这个版本也有很多e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">大家想了解更多一点可以去找一下相关资料e="font-family:arial, sans-serif;color:#191919">.

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> e="font-family:arial, sans-serif;color:#191919;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">♦ e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">公元e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">270e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">为纪念瓦伦丁为爱牺牲，e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px;background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-attachment:initial;background-origin:initial;background-clip:initial">日被定为情人节

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> e="公元270年2月14日 为纪念瓦伦丁为爱牺牲，2月14日被定为情人节" alt="公元270年2月14日 为纪念瓦伦丁为爱牺牲，2月14日被定为情人节" width="471" height="378" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">1748e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">公元e="font-family:arial, sans-serif;color:#191919">270e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，罗马圣教徒瓦伦丁被处死，基督教徒为了纪念瓦伦丁为纯洁的爱而牺牲自己，将临刑的这一天定为e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">圣瓦伦节e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">，此日被后人定为e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">情人节e="font-family:arial, sans-serif;color:#191919">”

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1076e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">罗马皇帝亨利四世被教皇驱逐出天主教，政教冲突爆发

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> ef="" title="中国人正确过2月14日的方式" target="_blank">e="1076年2月14日 罗马皇帝亨利四世被教皇驱逐出天主教，政教冲突爆发" alt="1076年2月14日 罗马皇帝亨利四世被教皇驱逐出天主教，政教冲突爆发" width="280" height="430" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">942e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1076e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，神圣罗马皇帝亨利四世e="font-family:arial, sans-serif;color:#191919">(Heinrich IV)e="color:#191919">被罗马教皇格列高利七世。按照天主教廷规定，被处罚者如不能在一年之内获得教皇的宽恕，他的臣民都要对他的解除效忠宣誓。德意志大部分诸侯表示，如果亨利四世不能在一年之内恢复教籍，他们就不再承认他的合法性。亨利四世没有足够的兵力来制服反叛的诸侯，他不得不向格列高利七世低头。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1859e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">美国合并俄勒冈州

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="1859年2月14日 美国合并俄勒冈州" alt="1859年2月14日 美国合并俄勒冈州" width="530" height="358" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">159e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1830e="color:#191919">年以后，成千上万的美国人从中西部迁移到西北部太平洋沿岸。在他们走过的俄勒冈小道上，至今仍可见当年篷车压出的车辙。e="font-family:arial, sans-serif;color:#191919">1848e="color:#191919">年建立俄勒冈地区。e="font-family:arial, sans-serif;color:#191919">1859e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日加入联邦，为美国第e="font-family:arial, sans-serif;color:#191919">33e="color:#191919">州。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1876e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">贝尔向美国专利局递交了电话发明专利申请书

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="1876年2月14日 贝尔向美国专利局递交了电话发明专利申请书" alt="1876年2月14日 贝尔向美国专利局递交了电话发明专利申请书" width="255" height="220" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">142e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1876e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，贝尔申请了那个著名的他和沃森一直研究着的装置e="font-family:arial, sans-serif;color:#191919">——e="color:#191919">电话的专利。同一天另一个发明家格雷e="font-family:arial, sans-serif;color:#191919">(1835-1901)e="color:#191919">也向美国专利局递交了相似设备的专利申请书，只因比贝尔晚了几个小时而痛失电话发明权。贝尔获得电话的专利证书。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1879e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">智利同玻利维亚、秘鲁两国爆发南美太平洋战争

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> e="1879年2月14日 智利同玻利维亚、秘鲁两国爆发南美太平洋战争" alt="1879年2月14日 智利同玻利维亚、秘鲁两国爆发南美太平洋战争" width="295" height="449" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">139e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1879e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日e="font-family:arial, sans-serif;color:#191919">(e="color:#191919">己卯年正月廿四e="font-family:arial, sans-serif;color:#191919">)e="color:#191919">，智利同玻利维亚、秘鲁两国爆发争夺南太平洋沿岸阿塔卡马荒漠硝石产地的战争。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1946e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">世界上第一台计算机诞生

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="1946年2月14日 世界上第一台计算机诞生" alt="1946年2月14日 世界上第一台计算机诞生" width="397" height="309" />

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">72e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1946e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，由美国军方定制的世界上第一台电子计算机e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">电子数字积分计算机e="font-family:arial, sans-serif;color:#191919">”(ENIACElectronicNumericalAndCalculator)e="color:#191919">在美国宾夕法尼亚大学问世了。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1956e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">苏共二十大上赫鲁晓夫作反斯大林的秘密报告

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">62e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1956e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，赫鲁晓夫上台后召开党的二十次代表大会，会议期间，赫鲁晓夫作了反斯大林的秘密报告。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1958e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">约旦e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">--e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">伊拉克成立阿拉伯联邦

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">60e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1958e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">1e="color:#191919">日，埃及和叙利亚成立阿拉伯联合共和国。约旦、伊拉克认为新成立的阿联对它们具有潜在的威胁而必须组成新联邦。e="font-family:arial, sans-serif;color:#191919">1958e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日伊拉克国王费萨尔，约旦国王侯赛因在安曼宣布两国并为一个e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">阿拉伯联邦e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">，即e="font-family:arial, sans-serif;color:#191919">“e="color:#191919">伊约联邦e="font-family:arial, sans-serif;color:#191919">”e="color:#191919">。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1967e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">拉美e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">21e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">国签署《拉丁美洲禁止核武器条约》

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">51e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,e="color:#191919">《拉丁美洲禁止核武器条约》亦称《特拉特洛尔科条约》。墨西哥、智利等e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">个拉丁美洲国家于e="font-family:arial, sans-serif;color:#191919">1967e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日在墨西哥城的特拉特洛尔科区签订，无限期有效。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1983e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">印度发生阿萨姆邦屠杀事件

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">35e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1983e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，正当印度阿萨姆邦全力以赴进行邦议会选举时，社区间的暴力活动席卷了这个邦，造成几千人死亡。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1989e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">霍梅尼宣布判处英国作家拉什迪死刑

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">29e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,e="color:#191919"> 英国作家萨曼e="font-family:arial, sans-serif;color:#191919">·e="color:#191919">拉什迪因出版一本名为《撒旦诗篇》的小说，遭到了穆斯林世界的强烈反对。e="font-family:arial, sans-serif;color:#191919">1989e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，伊朗宗教领袖霍梅尼宣布判处拉什迪死刑，并悬赏数百万美元追杀他。由此引起了一场国际风波。

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">♦ e="border:1px none windowtext;padding:0px">1992e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">2e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">月e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">14e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">日 e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">联合国宣布e="font-family:arial, sans-serif;color:#191919;border:1px none windowtext;padding:0px">1991e="font-family:宋体;color:#191919;border:1px none windowtext;padding:0px">年世界经济出现战后首次负增长

e="margin-bottom: 0px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; counter-reset: list-1 0 list-2 0 list-3 0 list-4 0 list-5 0 list-6 0 list-7 0 list-8 0 list-9 0;"> e="font-family:arial, sans-serif;color:#191919">26e="color:#191919">年前e="font-family:arial, sans-serif;color:#191919">,1992e="color:#191919">年e="font-family:arial, sans-serif;color:#191919">2e="color:#191919">月e="font-family:arial, sans-serif;color:#191919">14e="color:#191919">日，联合国宣布e="font-family:arial, sans-serif;color:#191919">1991e="color:#191919">年世界经济出现战后首次负增长

e=" text-indent: 28px;"> e="font-family:宋体">还有很多很多的事迹没有写完,e="font-family:宋体">如果大大小小写在一起的话,e="font-family:宋体">估计几本书还不够出呢.e="font-family:宋体">上面这些都还是一些精选的国内外大事件来的.e="font-family:宋体">并且还是没有说完.e="font-family:宋体">看完,e="font-family:宋体">是不是发现有很多事迹都没看过,e="font-family:宋体">也没有了解过.e="font-family:宋体">说实话我也是.e="font-family:宋体">因为咋天无意之间刷到一条抖音讲的是2e="font-family:宋体">月14e="font-family:宋体">日国内所发生的大事件,e="font-family:宋体">所以才会有想去查阅资料的冲动.e="font-family:宋体">情侣间只要关系好,e="font-family:宋体">每天都是情人节,e="font-family:宋体">也不会在意多这么一天.e="font-family:宋体">而现在的人儿除了吃饭睡觉打豆豆玩手机电脑游戏,e="font-family:宋体">很少人去看些新闻,e="font-family:宋体">了解一些历史.e="font-family:宋体">做为ef="http://www.taiheth.com" title="晶振" target="_blank">晶振销售人员一周只有一天休息,e="font-family:宋体">所以我会选择在家睡觉睡到自然醒,e="font-family:宋体">但很少能够满足.e="font-family:宋体">因为我们ef="/QuartzCrystal.html" title="石英晶振" target="_blank">石英晶振的业务手机都会24e="font-family:宋体">小时开机为客户服务.e="font-family:宋体">不敢关机也不敢调无声,e="font-family:宋体">因为怕客户找不上我们会着急.e="font-family:宋体">如果可以的话,e="font-family:宋体">我也还是会想去多了解一些历史的.e="font-family:宋体">毕竟读书的时候历史成绩一直都不太理想…