以下为句子列表：
英文: Abstract: As the heart of TWT，the structure stability of grided electron gun directly affect pulse output performance of TWT，and the structural reliability under vibration stress are especial-ly important for today's manufacturers.
中文: 摘要：栅控电子枪作为行波管的“心脏”，其结构的稳定性直接影响着管的脉冲输出性能，特别是在振动应力下的结构可靠性更是当今生产单位关注的重点。
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英文: The company main product includes: The vacuum electron gun, opticsmembrane level thickness measuring instrument, the electron gunscanning control meter, the high efficiency crystal thyratron pressureregulator, the precise optics with the power source, the
中文: 公司主要产品有：真空电子枪、光学膜层厚度测量仪、电子枪扫描控制仪、大功率晶闸管调压器、精密光学用电源、电气控制柜、数据采集模块等。
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英文: With Dynamical modal analysis of electron gun by use of ANSYS software,we can get the inherent frequency and vibration model, which can avoid sympa-thetic vibration.
中文: 利用ANSYS软件对电子枪进行动力学模态分析可以得到电子枪的固有频率和振型，从而在结构设计上避免共振。
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