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。
2
Late last month and early this month, oil officials noticed that some exposed electrical cables, running near farmland and powering their operation, had been severed.
石油官员们上月底和本月初发现，一些给油田供电的露天电缆在附近农田被切断。
3
The transformer is mainly used for power transmission and distribution and voltage transformation, is one of the important equipment of electricaloperation.