电压频率
翻译成英文是：voltage frequency
voltage frequency ? ?
网络 ? ?电压频率; ? ?
[例句]The single AC power input?voltage?frequency, the internal AC to DC after; DC converter rectifier exchange conversion, self-produced-very stable, pure sine?wave.
该电源输入单一交流电压和频率，内部经过交流对直流；直流对交流的变流整流转换后，自行产生-非常稳定纯净的正弦波。
