coalbinn.煤箱
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal unloading chute卸煤沟
coal mining industry煤炭产业
coalmine water burst煤矿突水
coal cutting machine截煤机
coal weighing feeder称重给煤机
coal industrial base煤炭基地
coal mining activity采煤作业
coal waste mountains煤矸石山
coal with low sulfur低硫煤
coal tar epoxy resin环氧沥青树脂