...键词 黄金矿;浅孔留矿法;底部结构;矿岩分运[gap=778]Key Words Gold mine;Shallow-hole shrinkage mining;Bottom structure;Separate handling of ore and waste rock...
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double bottom structure 双层底结构
stope bottom structure 采场底部结构
sub-bottom structure 浅地层结构
trench bottom structure 堑沟受矿底部结构
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