In vitrain bands the density and fractal dimension of fractures related to the thickness and lithotyp...

煤岩结构的研究在预测煤层的渗透性有重要义。

The paper had a coal water mixture test with vitrain coal, bright coal and dull coal from Ningtiaota coal in Shenfu mining area.

选矿区柠条塔煤中的镜煤、亮煤和暗煤进行了制水煤浆试验。