释义 |
- 铜矿开采:指从地下开采铜矿石的过程,包括探矿、采矿、选矿等步骤。
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A city of north-central Zambia near the Zaire border. It was founded in 93 'as a copper-mining center. Population, 207,500. 赞比亚中北部靠近扎伊尔边境的城市。93 '年作为铜矿中心建成。人口207,500。 - 2
A city of north-central Zambia north of Lusaka on the border with Zaire. It is a commercial and manufacturing center in a copper-mining region. Population, 250,490. 位于赞比亚中北部,卢萨卡北部,扎伊尔边界的一个城市,它在一个采铜区是一个商业和制造中心。人口250,490。 - 3
Through the investigation on various copper mining pits, impacts on the underground mining are analyzed, and some recommendations of disaster prevention were proposed. 通过对该铜矿区形成的数处露天采坑的调查,分析其对地下开采造成的影响,并提出灾害防治的对策。
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