coalern.运煤船;运煤铁路;煤商
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal mine gob采空区
coal chemical煤化学制品
Coal choosing选煤
coal outburst煤的挤出
coal swelling吸附
coal tar acid[医] 煤焦油酸
coal measuresn.煤系
coal bed roof煤层顶板
coal ash pond灰渣库
coal tar soap炭油皂