大同侏罗系煤和石炭二叠系煤配煤入选的探讨

大同侏罗系煤和石炭二叠系煤配煤入选的探讨的英文翻译

基本释义

• A talk about blending the Datong coals of Jurassic system and Carboniferous-Permian system before coal preparation