固态开关部件采用电力MOSFET做软开关，使得电路通断时，不会出现打火花的现象。

The solid state switch device uses power MOSFET as soft switch, so, the spark doesn't appear when the circuit turn on or turn off.

youdao

用钢铁敲打火石，可以打出火花来。

One can strike out sparks from flint with steel.

youdao

注：如对于火花塞清洁不彻底可能会导致极短时间的打火失败。

NOTE: Insufficient cleaning of the spark plug may lead to spark plug failure in a very short period of time.

youdao