sublevel system 中文意思是什麼
sublevel system
解釋
分段開采法-
The blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the productivity of mining is increased
在分段鑿巖階段礦房法回採實踐中，用非電導爆管雷管起爆系統成功地實現了階段落礦爆破與拉底、辟漏、切槽爆破一次同步進行，提高了生產效率。 -
Study on ore loss and dilution in pillarless sublevel caving based on sls system
系統的無底柱崩落法礦石損失貧化的研究 -
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
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