> 静电场( static electric fields )、静磁场( static magnetic fields )、 > 时变电磁场( time-varying field )的所有计算模式，都是向量计算。
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Chronic or delayed effects of static electric fields have not been properly investigated.
尚未有效地研究静电磁场造成的长期或延迟效应。
In the atmosphere, static electric fields (also referred to as electrostatic fields) occur naturally, in fair weather, and especially under thunderclouds.
在大气中，静电场在晴天、特别是雷阵雨时自然产生。
The use of DC electricity is another source of static electric fields, e.g. rail systems using DC, and televisions and computer screens with cathode ray tubes.
使用直流电是产生静电磁场的另一个原因，例如铁路系统使用直流电，电视和计算机屏幕带有阴极放射管。
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