英德
有道
百度
谷歌
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维基
百科
矿井开拓
development
- 矿井开拓系统不是一成不变的。
Mine development system is not unchangeable. - 开拓系统的变更对生产矿井的开采、安全、矿井面貌和经济效益将产生重大的影响。
The change in the development system can have great impact on the mining, safety, mine look and economic benefit of the production shaft. - 在现有矿井地质条件下，从设计方面论述了晋昶煤矿的开拓方案、选择大巷层位及设计大巷布置方式。
The paper described the development plan, the selection of seam location and the arrangement methods of main roadway in Jinchang Coal Mine from the designing aspect under present geological condition.
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