低频电压放大器 Low-Frequency Voltage Amplifier ; Frequency Voltage Amplifier
注入低频电压 Induced low-frequency voltages
低频干闪络电压 low-frequency dry-flashover voltage
低频闪络电压 low-frequency flashover voltage
低频湿闪络电压 low-frequency wet-flashover voltage
低频击穿电压 low-frequency puncture voltage
低频电子电压表 LF Eleceronic Volt Meter
根据超低频电压信号测量的特点，给出了一种精密测量电路。
The paper introduces the precise measuring circuit of ultra-low frequency voltage based on the characteristics of the measurement of ULF.
当CP脉冲为低频时，各相绕组平均电压和平均电流较低，电动机磁场储能较少，一定程度上克服了共振现象。
When the frequency of CP pulses is lower, average voltages and currents of windings will decrease and magnetic field energy of motor is very little so as not to produce resonance.
进行系统低频减载方案设计时，简单的频率响应模型由于未考虑系统电压对频率过程的影响而导致不少情况下无法适用。
During the design of under frequency load shedding (UFLS) schemes, some simple models for frequency dynamics analysis are obviously inadequate since they do not take system voltage into account.
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