搜索筛选:
搜索耗时3.8655秒,为你在为你在102,285,761篇论文里面共找到 1 篇相符的论文内容
发布年度:
Support of Solving the Problems of Abandoned Mining Areas in Germany by Improvement of the Universit
[会议论文] 作者：Michael Hegemann,
来源：33届国际采矿岩层控制会议(中国) 年份：2014
Since thousands of years mining operations take place on Earth.In this case a distinction is possible between a relatively short phase of exploration, a long production phase and a very long to "etern...
相关搜索：
