coalway煤巷
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coalescence technology粗粒化法
coal geological report煤田地质报告
coal mild gasification煤温和气化
coal-fired power unit火电机组
coal non-combustibles煤不可燃物
coal-bed gas pressure煤层瓦斯压力
coal face configuration工作面配置
coal mine returns picks煤矿回采
coal mine moni-toring煤矿监控
coal mining underground地下采煤