动力煤选煤厂
steam coal preparation plant
coal preparation plant for steam coal
炼焦煤选煤厂
coking coal preparation plant
末煤分选系统
slack coal separation system
7种煤煤质
coal quality of seven coal samples
变组分煤层气
Various component coal bed methane
various components coal bed methane
部分煤气化
partial gasification
partial-gasification
coal partial gasification
coal parial gasification
粗煤泥分选
coarse slime separation
Separation of Coarse Slime
大中型选煤
big and middle coal_preparation plant
顶煤分段高度
sublevel height of top coal