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 geochemistry煤地球化学
coalmining region煤矿区
coalescing medium聚结介质
coal ignitability煤可燃性,煤自燃倾向性
coal seam section煤层区
coal caving ratio放出率
coal mine exhaust煤矿排气
Coal is a fuel.煤是一种燃料。
coal gas outburst煤与瓦斯突出
coal mine railway煤矿铁路