短語詞組短語immersed tube tunnel 沉管隧道immersed precast tunnel 預(yù)制沉管隧道an immersed tube tunnel 沉管隧道immersed d tunnel 沉埋式隧道Curved immersed tube tunnel 曲線沉管隧道immersed tubular tunnel 沉管隧道outer ring immersed tube tunnel 外環(huán)隧道chang hong immersed tunnel 常洪隧道immersed tunnel method 沉管法 返回 immersed tunnel