电磁干扰

So, fiber optic communication, is not interfered electromagnetically , it is of good security to convey information.

三 不受电磁干扰。光纤是由，非金属的石英介质材料构成。因此，光纤通信，不受电磁干扰，传送资讯保密性强。

The article discusses several ways of ground connection and probes into the electro-magnetic interference from the ground wire.

讨论了接地的几种方式，探讨了地线中带来的电磁干扰，介绍了抑制和消除电磁干扰的途径和方法

Rapid transient electromagnetic pulse generated by impulse voltage discharge may cause serious interference to high voltage measurement, cause disoperation or damage to experimental equipment, and also may cause potential harm to person on-site. Similar question exist in many high voltage laboratories, and it is an important research subject of high voltage measurement. Electromagnetic interference generated by impulse voltage discharge is the most serious interference in high voltage test hall.

冲击电压放电产生的快速暂态电磁脉冲可能对高压测量造成很大的干扰，引起设备的误动或损坏，也可能对人身造成潜在的危害，类似的问题在许多高电压实验室均存在，是高电压测试技术中的一个重要研究课题，冲击电压放电产生的电磁干扰是高电压试验大厅设备中最严重的，随着电子测量控制设备和高参数试验设备的日益增多，这个问题在高电压实验室已经十分突出。

Based on the EMI coupling paths model of the off-line PWM switched mode power supply, sensitivity analysis of the component parameters in the model can be conducted and the key component parameters will be found. This method can be used in the EMC debugging and the EMI forecasting of power electronics equipment.

在本文对离线式PWM开关电源电磁干扰传播通道所建模型基础上，可以实现对模型中各元件参数灵敏度的分析，找到关键影响参数，为开关电源电磁兼容调试和电磁干扰预测提供有效的指导。

In this paper, a detailed study on the measurement of the frequency characteristics of EMI coupling paths, the model of EMI coupling paths and the equivalent EMI noise model of an off-line PWM switched mode power supply is introduced quantitatively and qualitatively.

本文以一台小功率离线式PWM开关电源为例，对开关电源传导电磁干扰耦合通道的特性测量、电路模型的建立和分析、开关电源对电网等效电磁干扰模型的建立进行了研究。

Analyzing the electromagnetic interference phenomcnun during the transmogrification test of transformer winding.

对变压器绕组变形测试中电磁干扰现象进行分析，总结电磁干扰现象的特点，提出预防措施。

Recently,the control of power supply of high frequency switch has been developed towards the "high refined and cuspidate" direction.Although the parts of apparatus have small volume and refined precision,the Electro Magnetic Interference and radiation are much stronger than before.

现在的高频开关电源控制已向&高、精、尖&方向发展，这些器件体积小、精度高，但电源内部的电磁干扰、辐射比原来更强了，为了使高频开关电源在预期的电磁环境下能正常工作、无性能降低及故障，并对电磁环境中的任何事物不构成电磁干扰，必需对其进行电磁兼容。

To understand the source of EMI and the propagative way of EMI clearly the key protection of sensitive receiving circuit for EMI can be carried out.

通过对电磁干扰源的明确认识，对电磁干扰引入路径的清楚了解，针对电磁干扰敏感的接收电路进行重点保护。

To understand the source of EMI andthe propagative way of EMI clearly the key protection of sensitive receiving circuit for EMI can be carried out.

通过对电磁干扰源的明确认识，对电磁干扰引入路径的清楚了解，针对电磁干扰敏感的接收电路进行重点保护。

Supported by National Natural Science Foundation of China (No.50077006) and Natural Science Foundation of Hebei Province (No.503424), the setup method of circuit model for instrument transformer and transient electromagnetic interference to the secondary equipments through conductive coupling due to switching operations in Gas Insulated Substation are researched in this paper.

本文结合国家自然科学基金项目&变电站瞬态电磁环境的预测计算方法研究&(项目编号：50077006)和河北省自然科学基金项目&气体绝缘变电站电磁环境与电磁干扰预测计算的研究&(项目编号：503424)，重点研究了气体绝缘变电站互感器高频电路模型的建立方法和开关操作通过传导耦合对二次设备的干扰问题。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。