短语词组短语wood pile fender 木桩护舷prestressed concrete pile fender 预力混凝土桩式护舷steel tube pile fender 钢管桩围堰steel pile fender 钢桩护舷fender pile 护桩;防撞桩;码头碰垫桩;靠船桩wood fender pile 木护;木护舷桩fender r pile 护桩fender guard pile 码头碰垫桩 返回 pile fender