alternating voltage

基本解释

This bar naturally vibrates at 3.145 MHz, but apply an alternating voltage and it vibrates more quickly or slowly.
这种硅条自然的震动于3.145 MHz的频率，不过当施加一个交变电流的时候，它的震动会变快或变慢。
The article deals with the functions of DC AC series intelligent power inverters, software PWM technology and alternating voltage output modulation technology.
介绍了DC AC系列智能电源逆变器的功能，软件PWM技术及其交流电压输出调制技术。
A sine wave alternating voltage signal is generated synchronously in the presence of gear teeth made of carbon steel, magnetic stainless steel, or iron (ferrous metal).
阿正弦波交流电压产生的同步信号中的齿轮碳钢，不锈钢磁性，或铁（黑色金属）提出的存在。

Their job is to convert high-voltage alternating current from the mains into low-voltage direct current for mobile phones, laptops, iPods and other electronic gadgets.
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Large-scale electricity transmission usually uses alternating current, in which both current and voltage oscillate.
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High-voltage DC can carry power over long distances at lower cost than alternating current, but the transformers still cost too much to make the idea widespread.
FORBES: Magazine Article