交流电
From Wikipedia, the free encyclopedia
交流电流(Alternating Current,缩写:AC)是指大小搭方向侪发生周期性变化个电流,拉一个周期内个运行平均值为零。弗同于直流电,后者个方向是弗会随着辰光发生改变个,并且直流电没周期性变化。
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