Strict prohibition , in execution place, of smoking, flames, heat, welding or electrical spark.

施工单位在施工过程中严禁吸烟、明火、高温、焊接或电火 花。

youdao

Totally Driven by compressed air, no electric power, no fire or explosion risk caused by electrical spark.

完全采用压缩空气为动力，不用电，无任何电火花引起的安全隐患。

youdao

Totally Driven by compressed air, no electric power, totally no fire or explosion risk caused by electrical spark.

完全采用压缩空气为动力，不用电，无任何电火花引起的安全隐患。

youdao

I don't know if you know how a spark plug works, but for the electrical current to fly into operation in a spark plug, the two points of contact have to be gapped.

我不知道你们是否知道,火花塞是怎样工作的，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。

耶鲁公开课 - 文学理论导论课程节选

Here's how it works: A small amount of diesel fuel is injected into the canister, where it is mixed with a tiny bit of air and ignited by an electrical spark.

FORBES: Clearing the Air