协同利用数学变换、高精度近似和二级逼近策略，提出了一种求解结构优化问题的准解析法。
A quasi analytic method for solving structural optimization problems is developed by coordinated use of mathematical transformations, high quality approximation and two level approximation strategy.
将基于二次规划的准解析法优化理论应用于机身主要承力框的设计中，建立了机身主要承力框的优化模型。
The method of optimization theory based on dual method was transplanted to design fuselage main frame, and the optimizing model of fuselage main frame was established.
将基于二次规划的准解析法优化理论应用于机身主要承力框的设计中，建立了机身主要承力框的优化模型。
The method of optimization theory based on dual method was transplanted to design fuselage main frame, and the optimizing model of fuselage main frame was established.
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