Coalen.科尔
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal scatter分煤设备
Coal product煤产品
coal naphtha煤石脑油
coal burningadj.燃煤的
coal scuttlen.煤斗
coal deposit煤沉积
coal horizon煤层
coal heating燃煤供暖
coal - bed煤层
coal fmeness煤粉细度