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N-VAR An alternating current is an electric current that continually changes direction as it flows. The abbreviation is also used. 交流电
This vibration creates an alternating current that can be tapped.
电子振动又产生了可以利用的交变电流。
Mains electricity in America is supplied as alternating current at 60 Hertz.
在美国，主要供应频率为60赫兹的交流电。
Diodes are electronic devices which rectify alternating current to direct current.
二极管是将交流电整流成直流电的电子装置。
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