... stopingwidth回采厚度 productionore回采矿石 abstractionofpillar回采矿柱 ...
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矿石回采率 ore recovery rate
·2,447,543篇论文数据，部分数据来源于NoteExpress
针对以上问题，对竹峪金矿区采矿技术进行了改进，采用小木架支护法，在冒落采区中开辟回采通道，回采矿石。
In view of above problems, the mining technology has been improved in Zhuyu mine areas by supporting with small wooden stand and opening stoping passage in the caving mining area.
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