Coalla科阿利亚
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal hopper car煤炭漏斗车
coal-gas flow瓦斯流动
coal shiploader煤炭装船机
coal ball stove煤球炉
coal waste rock煤矸石
coaling scuttle煤舱口
coal-type gas煤型气
coal ash fusion煤灰熔融性
coals resources煤炭资源
coal separation选煤