coalboxn.煤箱;发黑烟的炸弹
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal fired boiler烧煤锅炉
coal quality data煤质数据
coal bed drilling煤田钻探
coalescence point聚结点
coal interruption断煤
coal power boiler燃煤锅炉
coal a locomotive给火车上煤
Coal pretreatment煤预处理
coal by-product煤副产品
coal gas producer煤气发生炉