large diameter pipe jacking nest
...大直径管群；隧道；地表沉降；顶管[gap=1719]Key words: pipe-roof pre-construction method; large diameter pipe jacking nest; tunnel; surface subsidence; pipe jacking..
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large diameter pipe jacking nest
大直径顶管窝
以上为机器翻译结果，长、整句建议使用 人工翻译 。