A coil of wire rotating in a magnetic field produces a current.
在一个线圈的电线旋转磁场产生电流。
Tail: as in wire tail. The end, or last few feet of a coil of wire.
尾部：在电线的末端或者一盘线圈的最后的几英尺。
Electricity is produced by spinning large magnets inside a coil of wire within the generator.
电是靠使大型磁铁在发电机内的线圈里面转动而产生的。
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