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。

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

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接着，离奥斯陆西南几公里远的托夫特的一个红砖小房里，涡轮机开始运转，于是电流就产生了。

Then a turbine began to run inside a small, redbrick hall at Tofte, a few kilometres south-west of Oslo, and electric current emerged.

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正常的电子器件不会用我们从树木中获取的这种电压和电流运转。

"Normal electronics are not going to run on the types of voltages and currents that we get out of a tree," Parviz said.

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