Before the electrical current puts into operation in a spark plug, the two points of contact have to be gapped.

在电流通入火花塞中使它运转之前，两个接触点之间需要有空隙。

All of the wires have to conduct electrical current.

所有的导线都要载电流。

That will, in turn, be registered as a change in electrical current.

这种变化将以电流的变化的形式会被依次记录下来。

The sound waves produced a mild electrical current of about 50 millivolts.

声波能产生大约50毫伏的微弱电流。

This generates electrical current that can then be used to charge a battery.

这一过程产生的电流可用于为电池充电。