排放瓦斯 meaning in English

fire drainage
firedamp drainage
methane drainage

Application of draining gas tail road in qixing coal mine
排放瓦斯尾巷在七星煤矿的应用
Controlling power cut - off of auxiliary fan and reducing number of gas discharge
控制局部通风机停断电减少排放瓦斯次数
Research on model zff - 25 special drilling machine for advance gas drainage borehole
25型超前排放瓦斯钻孔专用钻机的研制
Analysis of bolting with wire mesh technology from roof fall of letting gas drift
从排放瓦斯巷道冒顶事故分析锚网支护工艺