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