coalgasn.煤气
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coalminingmethod采煤方法
coal quality log煤质测井
coal mine spoils煤矸石
coal gangue heap煤矸石山
coal tar naphtha[医] 煤焦油精, 煤焦油石脑油
coal inflammable煤自燃
Coal mine mining煤矿开采
coal stocktaking存煤量测量
coal - measure煤系
coal barren zone无煤带