求翻译：对改进的翻转机主梁结构进行有限元分析，结果表明，改进后的箱式主梁结构满足强度和稳定性要求，可以实现在翻转过程中结构稳定，为主梁结构的优化设计提供依据。是什么意思？

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Turn over the beams to improve the structure and the results showed that a finite element analysis, improvements to the box-type beams structures meet intensity and stability requirements, you can achieve in overturning process based on the structural stability, Mr Leung structure optimization desig

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Flipped on improvement of finite element analysis for main girder structure, results showed that improved box main girder structure strength and stability requirements are met, you can implement structural stability during the flip process, provide a basis for optimization design of the main beam.