1.If the voltage exceeds a critical limit (breakover voltage), the device switches into conduction.

1.当电压超过临界（导电压）时，该元件会导。

2.From the cabin to the cabin outside, its key technologies is to the outer space environment adaptation, thus guarantee circuit's breakover.

2.从舱内到舱外，其关键技太空环境的适应从而保证电路的导。