以下为句子列表：
英文: Based on the construction of Guangzhou Metro Line 3 welding process and quality control, this paper introduces the mobile contact welding, analyzes some key points during the process of welding, such as welding of rails in curved sections, environmental p
中文: 摘要介绍了移动式接触焊在广州地铁3号线中的施工工艺及施工过程；分析施工过程中应该注意的曲线钢轨焊接、环境保护、曲线钢轨焊接接头平直度的测量、设备维修保养等技术要点。
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英文: Friction stir welding process can improve mechanical properties as well as decrease distortion and residual stress.
中文: 采用搅拌摩擦焊连接镁合金可以避免熔焊时产生的焊接缺陷，且具有焊后变形小、残余应力小等优点。
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英文: The results show that the joint with good microscopic structure and mechanical property can be obtained by using optimized welding process parameters and rational heat treating process after welding.
中文: 对 45钢 /W8Co3N高速钢刀具的摩擦焊接工艺及焊接效果进行了试验研究 ,结果表明 ,采用优化的摩擦焊接工艺参数及合理的焊后热处理工艺可获得具有良好显微组织和力学性能的焊接接头。
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英文: HF WELDING PROCESS OF AUSTENIC STAINLESS STEEL PIPES HAS PASSED APPRAISAL
中文: 奥氏体不锈钢管高频焊接工艺通过省级鉴定
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英文: With the application of the welding process in the industry, in order to strengthentheir competition, manufacturers scream for the less cost and higher efficiencywelding process.
中文: 随着焊接技术在工业生产中的广泛应用，各生产厂家为了增强市场竞争力，越来越强烈要求降低成本，提高焊接生产效率。
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