methane outburst 中文意思是什麼
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Methane comprehensive preventive measures for outburst coalbed mining
突出煤層開採的瓦斯綜合防治措施 -
Prevention of coal and methane outburst in slicing fully - mechanized caving of extremely - thick coal seam
特厚煤層綜放開採的煤與瓦斯突出防治
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