短语词组短语Weak Surrounding Rock Tunnels 软岩隧道weak -rock 软岩buried weak surrounding rock 浅埋软弱围岩weak wall rock 软弱围岩weak swelling rock 软弱膨胀性weak tectonic rock zone 构造软弱岩带Weak Metamorphic Rock 弱变质岩weak country rock 软岩 返回 weak rock