短语词组短语threaded both ends 两端螺纹Flanged And Threaded Ends 法兰和螺纹连接rod threaded at both ends 两端有螺纹的螺栓both ends threaded 两端带螺纹BET Both Ends Threaded 两端带螺纹BETBoth Ends Threaded 两端带螺纹 返回 threaded ends