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通过对扭转变形的动态观测，研究了焊接扭转变形的机理，为进一步搞清构件形式、工艺参数对焊接扭转变形的影响提供了依据。
Through the dynamic observation of the torsional deformation, the mechanism of the welding torsional deformation is studied, which provides a basis for further clarifying the influence of the form of the component and the process parameters on the torsional deformation of the welding.