电压变动，凡不保持电压均方根值恒定不变的，或者说实际电压偏离标称电压（额定电压）的现象。
电压变动率 [电] voltage regulation
耐电压变动测试 Voltage Dips & Interruptions
电源电压变动 supply voltage variation
电系统电压变动 electrical system voltage variation
电压变动特性 relative voltage change characteristic
电压变动频度 r rate of occurrence of voltage changes,r
输出电压变动 Load Regulation
输入电压变动测试 INPUT VOLTAGE CHANGE TEST
电压波动和闪变 voltage fluctuation and flicker ; fluctuation & flicker
参展商如使用较敏感的仪器，请自备稳定器以作电压变动之用。
Exhibitors with very sensitive equipment are advised to bring their own stabilizer to cater for voltage fluctuation.
如果电流和电压变动，其它因素开始作用，因为电流和电压是互相影响的。(译者注：其它因素？)
If current and voltage are fluctuating, however, other factors come into play, as the current and voltage interact with each other.
脉动：电压或电流作有规则的，短暂的和明显的突然变动。
Pulse: a regular, significant abrupt change of short duration in the level of an electric voltage or current.
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