alternating current
In Europe, AC is usually generated at 50 Hz.
欧洲的交流电输出频率通常为50赫兹。
—— 柯林斯例句Either direct or alternating current may be used for driving electric trains.
直流电和交流电都可用来驱动电气火车。
—— 辞典例句Alternating current reverses from negative to positive about 60 times a second.
交流电由负到正一秒钟大约变换六十次。
—— 辞典例句This high frequency alternating current produces the high frequency radio waves mentioned in the previous chapter.
这种高频交流电流产生前一章提到过的高频无线电波。
—— 辞典例句A device used to convert current into alternating current.
反用换流器用于变直流电为交流电的仪器。
—— 给力词典精选