mining by areas
... mining sequence 开采顺序 mining by areas 分区开采 mining by stages 分期开采 ...
基于24个网页-相关网页
分区开采法 block system ; block mining system
分期分区开采 Mining by stages and by districts
盘区分层开采法 [矿业] panel slicing
分区短柱开采法 block panel system
矿产资源开采分区表 KAICFQ
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