一种后部车体结构，包括有一根后部侧梁、一个侧门槛内侧以及一个后部底板。
One kind of the rear vehicle body structure including a rear side of the beam...
结果发现，对整车强度和刚度有重大影响的关键部位并不在车辆底架，而在上侧梁中段。
The results show that the key position which mainly affects the strength and the rigidity of the wagon body is in the middle position of the upper-side beam instead of the low frame.
介绍了DJ 1构架侧梁的结构，分析了其焊接变形特点，阐述了控制构架侧梁焊接变形的工艺措施。
This paper mainly describes the structure of DJ1 bogie side frame and analyzes its distortion characteristic. The controlling technology of welding distortion has also been presented.
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