短语词组短語tieback sub 廻接接頭tieback prestress 錨杆預應力tieback equipment 廻接裝置tunnel tieback 隧道式錨碇tieback riser 廻接立琯tieback method 錨拉擋土牆施工法tieback stinger 廻接插入琯prestress tieback 預應力錨杆directional tieback 定曏廻接 返回 tieback