Coaltonn.科尔顿(在美国;西经 82º37' 北纬 39º06')
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal mining staff煤炭工业人才
coal supply chain煤炭供应链
Coal- tar pitch煤沥青
coal mine laneway煤矿巷道
coal metamorphism煤变质
coal seam profile煤层剖面
coal gas pipeline煤气管线
coal exploitation煤炭开发
coal goes against煤顶
coalescent theory中性溯祖理论