Prospecting metal mine goafs by Rayleigh wave method is introduced.
介绍用瑞雷波法检测金属矿山采空区.
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Metal mine waste tailing dumps are a typical degenerated ecosystem.
尾矿废弃地是一种典型的退化生态系统.
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Drainage and mud system on underground are important safety production facilities in metal mine.
金属矿山井下排水排泥系统是重要的安全生产设施.
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