coalboxn.煤箱;发黑烟的炸弹
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal liquefaction煤的液化
Coal- mud water煤泥水
coal mining areas煤矿区
coal tar dyestuff煤焦油染料
coal combustibles煤的可燃成分,煤可燃成分
coal construction煤体结构
coal-oil slurry油煤浆
coal ash analysis煤灰成份分析
coal mine machine煤矿机械
coal gas recovery煤气回收