coalpitn.煤坑;炭灶
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
Coal-burning pollution燃煤污染
coal-accumulating zone聚煤带
coal-bearing formation含煤建造
coal resource reclaiming煤炭资源回收
coal mining water inrush煤矿突水
coal oil and electricity煤油电
coal-forming conditions成煤条件
coal-pulverizlng system制粉系统
coal - methane eruption煤与瓦斯突出
coal power industry chain煤运电产业链