短語(yǔ)詞組短語(yǔ)coal and gas bursting 煤與瓦斯突出coal containing gas 含瓦斯煤Coal Mine Gas Prediction 煤礦瓦斯預(yù)測(cè)coal over gas 翻譯coal related gas 煤型氣coal seam gas content 煤層瓦斯含量developing coal seam gas 開(kāi)發(fā)煤層氣 返回 coal gas