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