Coalen.科尔
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal capacity装煤量
coal fineness煤粉细度
coal sampling采煤样
coal analysis煤分析
coal-planer刨煤机
coal for fuel燃煤
coal volatile挥发分
coal handling煤处理
coal shortage煤荒
coal province含煤区