Prospecting metal mine goafs by Rayleigh wave method is introduced. 介紹用瑞雷波法檢測金屬礦山採空區。
Research on continuous ore drawing and haulage equipment for underground metal mines has widely been done in main foreign countries with mining industry. 國外主要礦業國家對地下金屬礦山連續出礦運礦設備進行了深入的研究。
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