有SF 6气体密度继电器，并能事故报警，及闭锁操作机构。

It shall have SF6 gas density relay and emergency alarm as well as blocking operating mechanism.

youdao

有SF 6气体密度继电器，并能事故报警，及闭锁操作机构。

It shall have SF6 gas density relay and emergency alarm as well as blocking operating mechanism.

youdao