“unstability of drift wall rock”的概念、定义、翻译、参考文献-科学参考

单词	unstability of drift wall rock
释义	unstability of drift wall rock Encyclopedia 理学矿山工程地质问题释 unstability of drift wall rock井巷围岩失稳井巷发生的冒顶、片帮、围岩鼓胀等地压现象。
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