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 deposits煤矿床,煤藏,煤炭矿床
coal partical粉煤
coal-cutter采煤机
coal laneways煤巷
Coal-miners煤矿工人.
coal briqutte煤球
coal qualityt煤质
coal terminal煤码头
coal-pyrite煤系黄铁矿
coal business煤炭企业