电压降低的英文：
voltage derating

surge voltage protector
浪涌电压保护器

voltage variable brightness diode
随电压变化亮度的二极管

That is how voltage is measured.
那就是如何测量电压的方法。

The triode steps up voltage.
三极管能升高电压。

A momentary voltage dip that lasts for a few seconds or less is classified as a voltage sag.
短时电压跌落持续几秒或更短可归属电压下跌。

All vessels docking at the frontier ports are required to be rodent free and in possession of a valid Derat or Deratting Exemption Certificate.
所有停靠在国境口岸的船舶都要求没有啮齿动物并具有有效的除鼠证书或免于除鼠证书。