calculation of coal amount into each boiler  压容温分析; 分炉计量

ratio of air to coal amount  风煤比

amount of saving coal  节标煤量

amount of the coal  煤量

coal consumption amount utilization ratio of coal  煤利用率

the amount of drillings coal powder  钻屑量

brown coal and bitumionus coal  褐煤和烟煤

City Suburbs Coal Mine of the Coal Electricity Group Company of Yonycheng  永城煤电集团公司城郊煤矿

coal and coal ash  煤及煤灰

Coal and Coal Char  煤与煤焦

coal and coal gas opening together  煤

coal and coal industry of Shanxi  山西煤炭

coal and coal processing in Shanxi  山西煤炭

Coal and Coking Coal Circulation  煤焦流通

COAL AND NON-COAL  煤与非煤

Coal as Received and Coal as Fired  入厂煤和入炉煤

coal bed methane and coal coordinative development  煤层气与煤炭协调开发

coal bed methane in coal mine area  煤矿区煤层气

Coal mine and coal preparation plant  矿井及选煤厂