hold-open operating lock

什么意思_英语hold... ... hook hold lock 钩位锁定 hold-open operating lock 舱盖打开时的锁挡 boom hold lock 动臂保持止动 ...

开启状态,opening... ... ) water-supply networks 阀门开启状态 ) hold-open operating lock 炮塔门开启状态固定销 ) open 开启 ...