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介绍桥梁伸缩装置的作用、发展历程及面临的问题 ,分析了热轧抽拔一次成型的工艺技术性能 ,在桥梁伸缩装置中的应用效果及发展趋势。
This paper introduces the function, development history and problems of bridge expansion and contraction device, analyzes the technical performance of one-step molding by hot rolling, the application effect and development trend in bridge expansion and contraction device.