To dilute gas concentration, most coal mine use local fan ventilate, and decrease the possibility of fire damp explosion.
当前国内一般采用局部通风机进行矿井通风，以稀释瓦斯浓度，消除煤矿事故隐患。
Methods Recall and summarize the emergent cured measures of seven iatrical organizations took after the outsize fire damp explosion.
方法回顾总结特大瓦斯爆炸后七家医疗单位协同应急救治措施。
The engineers and technicians are still conferring on the unexpected accident of the fire damp explosion.
工程师和技术员们还在讨论此次瓦斯爆炸的以外事故。
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