reinforced concrete pipe 钢筋混凝土管 ; 钢筋水泥管 prestressed reinforced concrete pipe 预应力钢筋混凝土管 RCP REINFORCED CONCRETE PIPE 钢筋混凝土管 ..
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prestressed reinforced concrete pipe pile 预应力钢筋混凝土管桩
prestressed reinforced concrete pipe piles 预应力钢筋混凝土管桩
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