gassy seam 中文意思是什麼
gassy seam
解釋
瓦斯煤層-
Gas outburst prevention technology in high gassy gateway heading face of quot; three soft quot; instability coal seam
不穩定煤層高突區域掘進工作面瓦斯綜合治理 -
Gas control method for short - interval high - gassy seam in shanjiaoshu mine
山腳樹礦近距離高瓦斯煤層的瓦斯治理方法 -
Mine fire control in fully mechanized coal caving face in high gassy flammable soft broken seam
高瓦斯易燃松軟破碎煤層綜放工作面火災的防治
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