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。
Jack ran to do a side turn, jumped up and grabbed the monkey rod, and pulled himself across rapidly alternating his hands.杰克跑着做了一个侧手翻,跳起来抓住猴杆,双手交替着将自己迅速拉到对岸。
Bond hypothesized that the alternating cycles might be evidence of changes in ocean-water circulation and therefore in Earth's climate.邦德推测,这种交替循环可能是海-水间循环变化的证据,因此也会影响地球的气候。
Also, skilled artisans did not work by the clock, at a steady pace, but rather in bursts of intense labor alternating with more leisurely time.同时,技艺纯熟的工匠师傅们并不会按照时间来稳步地安排工作,他们更喜欢享受更多闲暇时间与集中赶工相交替的生产方式。