深部开采 meaning in Chinese

deep mining

Study on stability deep rock mass at anqing copper mine
安庆铜矿深部开采稳定性研究
Countermeasures of solving the problems of deeply mining
解决矿井深部开采问题的对策
Problems and solutions of deep mining in coal mine
煤矿深部开采可能出现的问题及对策
Approach to support methods for deep stress mining tunnel
应力巷道深部开采支护方式探讨
Mining technology for the 21st century inco digs deep in sudbury
公司萨德伯里矿区深部开采的新工艺

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