coalyadj.煤的;煤状的;含煤的
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal dresser选煤
coal science煤炭科学
Coal - gas煤气
coaling port装煤港
coal bed gas煤层气
coaling gear上煤装置
coal mixture混煤
coal combine联合采煤机
coal maceral煤岩组分
coal gasiter发生炉