coalbinn.煤箱
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal-beating basin含煤盆地
coal-tar oil stain煤焦油着色剂
Coal cleaning method选煤方法
coal-tar chemistry煤焦油化学
coal delivery system煤输送系统,煤的输送系统
coal geological body煤矿地质体
Coal loading machine装煤机
coalification degree煤化程度
coal injection ratio喷煤比
coal mining prospest开采前景