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.
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。
Via the beam frame structure, the upper and lower layers of a combination house can be simply and stably combined.
通过梁架结构 可以实现组合式房屋上下两层的简便、稳定的结合。
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