电磁污染

原边电路的主开关管和副边电路的功率二极管都实现了软开关，减小了开关过程中的能量损耗，减小了电磁污染。

The analysis demonstrates that soft-switching in the switches of the primary circuit and in the diodes of the secondary is realized , the switching loss and EMI are also reduced .

近年来，随着GHz频段的无线通讯和微波电路的快速发展，电磁污染成为人们实际生活中逐渐关注的热点问题。

In recent years , electromagnetic pollution became an increasingly concerned topic and the hot issues for the people actually living due to the rapid development of wireless communications and microwave circuits in the GHz frequency range .

消除开关电源对环境的电磁污染，一是要采用软开关的PWM调节方式，二是在输入端增加功率因数校正器，这是目前一般采用的办法。

To dissolve the switching power supply electro magnetism pollution towards environment , soft-switching PWM mode has been used instead of hard-switching PWM mode and a PFC stage has been added normally .

电磁污染已和水与空气受到的污染一样，正在引起人们极大的关注。

Electromagnetic pollution gets more concern continually as water and air pollution .

电视和调频广播发射台的电磁污染计算

A Computational Method for Electromagnetic Pollution of TV aud FM Broadcasting Transmitting Stations

微波加热器的电磁污染防治

The Precaution Against Electromagnetic Pollution of Microwave Heating Equipment

电磁污染已成为当代首屈一指的物理污染。

Electromagnetic pollution has become the chief physical pollution .

降低电机逆变系统电磁污染的软开关技术研究

Study on Soft-switching Technology to Reduce the Electromagnetic Pollution of Motor Inverter System

日常生活中的电磁污染与防护对策

Electromagnetic Pollution and Its Defensive Measures in Daily Life

电能质量市场中电磁污染排放权分配的研究

Research on Allocation of Gross Electromagnetic Pollution Emission Right in Power Quality Market

电磁污染与电磁波吸收材料

Electromagnetic Wave Pollution and Electromagnetic Wave Absorbing Materials

环境电磁污染对少年血清T3、T4的影响

Effect of Environmental Microwave Radiation to the Serum T_3 and T_4 Levels in Children

电视调频发射天线的电磁污染问题

The Electromagnetic Pollution From TV FM Transmitting Antenna

电磁污染及电磁辐射防护材料

Electromagnetism Pollution and Protection Materials for Electromagnetic Radiation

电磁污染已经成为一种不容忽视的全球性社会公害。

Electromagnetic pollution has been becoming globally harmful to public society not to be ignored .

这些产品给我们的工作、学习和生活带来了方便，但同时又给我们周围的环境造成电磁污染。

But at the same time , they also bring electromagnetic pollution to our environment .

电磁污染事故树分析

Fault Tree Analysis on Electromagnetic Pollution

论文还就直接转矩控制技术，变频技术产生的电磁污染的控制问题进行了讨论。

The technique include the variable frequency technology , the direct self-control technology , the EMI , etc.

最后提出电力电缆的技术要求并设计电缆结构，以减少电缆振荡辐射谐波对环境的电磁污染。

Technical requirements for power cables are proposed to reduce the electromagnetic pollution from the harmonic oscillation radiation .

电能给人类带来巨大利益的同时，使人体暴露于强大的电磁场污染中。通常克服电磁污染的方法有屏蔽和吸收。冬春季污染严重，夏秋季污染较轻；

While electricity offers human great benefit , it makes human body exposed in the serious pollution of electromagnetic radiation .

目的了解饮水机微生物污染状况并探讨有效消毒方法。通常克服电磁污染的方法有屏蔽和吸收。

Objective To understand the microbiological pollution of drinking water dispensers and find out the effective disinfection method for dispensers .

要对突发性环境污染事故进行风险管理，需要有组织的风险管理体系和风险管理计划。通常克服电磁污染的方法有屏蔽和吸收。

It needs well organized risk management system and well prepared risk management plan to deal with the accidental pollution risk .

流域水质监测站对发生在江河中的重大水质污染事故中承担着前哨的重要作用。通常克服电磁污染的方法有屏蔽和吸收。

The drainage area water quality monitoring station make an important role of outpost in the rivers ' significant pollution accident .

分析表明，大幅度提高吸收损耗，适当降低反射损耗可以减少二次电磁污染。

The analysis demonstrates that the secondary electromagnetic pollution could be reduced by drastically increasing the absorbing dissipation of shielding material .

阐述了由于城市室内配电房的广泛应用而造成环境电磁污染问题，以及国内外研究简况。

The environment electromagnetic field pollution problems caused by indoor distribution substation busbars and its research situation around the world are described .

饭店可以说是不容忽视的污染大户，对环境构成巨大的威胁。通常克服电磁污染的方法有屏蔽和吸收。

To a certain extent , restaurant industry had become a significant pollution source , which forms a great threat to the environment .

同时，屏蔽电磁污染使其限定在一定区域，已成为环保领域最为活跃的研究课题之一。

Additional , shielding electromagnetic pollution and limiting it ina certain area , have become one of the hot topics in environmental protection .

四相交流输电较三相交流输电在提高输送功率密度，节省线路走廊，降低电磁污染等方面具有明显的经济技术优势。

Compared with three-phase transmission , the four-phase transmission can greatly increase the density of electricity transmission and decrease the transmission corridor cost .

随着电磁污染的日益加剧和军事隐身技术的不断发展，吸波材料的应用越来越广泛。

With the development of military stealth technique and increasingly electromagnetic pollution , the application of absorbing materials is more and more comprehensive .

随着医院对各类医疗精密仪器日益信赖的今天，我们对这些仪器在使用维护工作中的防干扰、防电磁污染越来越重视。

As the increasing dependence on various medical precision instruments , we must pay more attention to their anti-interference and anti-electromagnetic pollution in practice .