coalminen.煤矿
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal seam Stubble Repeating煤层压茬
Coal mining subsidence land采煤塌陷地
coal-water-oil emulsion煤水油乳胶
Coal and gas delay outburst煤与瓦斯延期突出
Coal workers'pneumoconiosis
coal- transporting system输煤系统
coal Mine drawings approval矿图审批
coal and rock mass strength煤岩体强度
coal tar pitch carbon fiber煤沥青碳纤维
coal-distributing machine撒煤机