coalboxn.煤箱;发黑烟的炸弹
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal-based city煤炭型城市
coal tar light oi煤焦油轻油
coal constitution煤组构
coal liquifaction煤制油
coalescent towers联体桥塔
coal lifting pump煤水泵
coal mixing plant配煤厂
coal accumulating分析
coal seam of face工作面煤层
Coal--Bed Gas煤层气