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。

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.

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幽灵般的图像在屏幕上闪闪烁烁，但是，除了静电发出的沙沙声外，没有任何声音。

Ghostly images flickered in and out. There was no audio except for a static hiss.

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共同特点：具有静电吸附易安装、快速自动排除气泡、92%以上的超高透光度、移除后绝不留残胶在屏幕表面等特点。

Common features: the static adsorption are easy to install, self exclude bubbles, high light transmittance reach 92%, removing it never leaves residue in the screen surface.

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