shrinkage stoping 中文意思是什麼
shrinkage stoping
解釋
留礦采礦法-
Experimental research on composite scraper way low shrinkage stoping method
復合電耙道淺孔留礦采礦法試驗研究 -
Experimental study and application of waste - lifting shrinkage stoping
削壁充填留礦采礦法試驗研究與應用 -
Study on high sublevel stoping of shallow - hole shrinkage system with sill pillar in thin - small ore body
薄小礦體有底柱淺孔留礦法高分段回採的研究
分享友人