Coaltern.科尔特
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
coal of entering factory入厂煤
coal- fred power plant燃煤发电
coal-tar hydrogenation煤焦油氢化
coal-based natural gas煤制天然气
coal vocational colleges煤炭高职
coal mining total amount煤炭开采总量
coal distribution scheme配煤方案
coal-exploring methods采煤方法
coal tar electrode pitch煤焦油电极沥青
coal resource for coking炼焦煤资源