Underground Mine Development 开拓掘进
mine development engineer 矿山开发工程师
surface mine development 露天矿开拓
Mine Development Associates 矿业开发协会
mine development map 开拓系统图
Mine Development Ways 井田开拓方式
mine development design 矿井开拓设计
Mine Development Evaluation 矿山开发条件评估
Mine development system is not unchangeable.
矿井开拓系统不是一成不变的。
The slope-sliding of Union Valley Open Pit Mine began at the mine development stage.
团结沟露天矿从基建时起即开始滑坡。
The "double elevation" is a waterproof, anti-collapsing, safe and economical means of mine development recently suggested.
“双层水位”开采方法是近几年提出的防水、防塌、安全、经济的矿山开采方法。
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