gas lock meaning in English

煤气闸
气封
气塞
气栓

Study on multi - thread communication in automatic detecting device for gas lock valve
闭气塞自动检测系统多线程通讯实现的研究
Advantages and diadvantages of several connections of gas locking device for ventilation and power supply
风电瓦斯闭锁几种接法的利与弊
Application of senturion system in gas locking for ventilation and power supply of working faces
森透里昂系统在采掘工作面瓦斯风电闭锁中的应用
Fault analysis and circuit transformation of kg7005 intelligent gas locking device for ventilation and power supply
7005智能型风电瓦斯闭锁装置故障分析与线路改造