隔爆型真空磁力起动器
flame-proof vacuum magnetic starter
综合磁力起动器
combined magnetic starter
矿用隔爆型真空电磁起动器
mine explosion-proof vacuum electromagnetic starter
explosion-proof vacuum electromagnetic starter for mine
矿用隔爆型组合真空电磁起动器
vacuum electromagnetic starter for mine flame-proof combination
flameproof combined vacuum electromagnetic stater for mine
flame-proof comined vacuccm electromagnetic starter for mine
投球式压力起爆器
ball-throwing type pressure initiator
正时致动器动力活塞
timing actuator power piston