1)perimeter grouting,周边管浆2)grouting of annular space,周边灌浆3)peripheral curtain grouting,周边帷幕注浆4)peripheral air ducting,周边空气管5)pre-grouting around whole section,全断面周边预注浆6)flagellum outer doublet microtubule,鞭毛周边双微管
用法例句
In the construction of Xiamen Xiang\'an tunnel,peripheral curtain grouting,advance long pipe-roofing and tri-bench excavation method have been taken based on the geological condition of deep F3 weathered trough passed by Xiang\'an tunnel.
