In order to build a beautiful scenery of mountains in the northwest zone, it is necessary to study the failure laws of surrounding rocks and overlying bed induced to mine in the underground deposits.

  • 为了再造一个山川秀美的西北地区,需要研究地下矿床开采引起围岩和地表覆盖层破坏规律。

  • 互联网摘选 2025-03-01 14:23:47

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