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

1.岩结构在预测层渗透性方面有重要义。

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

2.选择神府矿区柠条塔中镜、和暗进行了制水浆试验。