steeply inclined seam 中文意思是什麼
steeply inclined seam
解釋
急傾斜層-
Application of longwall mining method in steeply inclined seam
在急傾斜煤層中巷道長壁採煤法應用 -
Study of calculation method for discontinuous surface deformation induced by steeply - inclined seam mining
急傾斜煤層開采地表非連續變形計算方法研究
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