短语词组短语bolt -end breaking mechanism 锚尾破断机制metal tube -indentation bolt-end 金属套管压痕式锚尾bolt end post cure 锚尾后固化bolt end plate 螺栓端板bolt end -plate 螺栓端板bolt end plate joints 螺栓端板连接bolt end of copper 铜制螺栓端 返回 bolt end