短语词组短语fender r pile 护桩fender guard pile 码头碰垫桩wood fender pile 木护;木护舷桩pile fender 桩柱碰垫;护桩;防冲桩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 返回 fender pile