The fromer gave an optimal solution to problem, while the later was combined with a large-scale copper mine to make a case study so that the correctness and practicability of model were proved powerfully.
前者给出了问题的最优解,后者结合某大型铜矿进行了实例研究,模型的正确性和实用性得到了有力的证明。
参考来源 - 可持续发展的矿业开发模式研究Metal element contents in plant samples from Tangdan Copper Mine are higher than Lala Copper Mine, contents of Cu are the most obvious.
汤丹铜矿上的植物样品金属含量均大于拉拉铜矿,尤其是Cu元素。
参考来源 - 中国西南会理—东川坳拉槽成矿带铜矿区苔藓植物区系及其植物地球化学研究·2,447,543篇论文数据,部分数据来源于NoteExpress
They say the peak of copper mine supply growth is behind the industry.
他们说,铜矿供应增长的顶峰还未到来。
In 2003, Angulos was driving excavation equipment in a large copper mine when he felt a rush of air.
2003年,安格洛斯在一个大型铜矿矿山驾驶采掘设备时,突然感到了一股气体扑面而来。
On August 5, the shaft of a gold and copper mine in Chile caved in, trapping 33 miners 2, 300 feet underground.
8月5日,智利一个采掘金和铜的矿山发生了竖井坍塌事故,33名矿工被困2300英尺的地底。
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