underground tunnel chamber
underground tunnel chamber
地下隧道硐室
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The invention relates to a wall rock support method for an extremely strong or a strong or a moderate rock burst tunnel section that is deeply buried in an underground chamber.
本发明涉及一种深埋地下洞室极强或强或中等岩爆洞段的围岩支护方法。
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