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.
板形测控数学模型、解析板形刚度理论和板形板厚协调规律的综合称为板形计法。
Shape survey and control mathematics model, analytical theory for shape stiffness and the shape and gauge coordination control law are called shape meter method.
首先用空间解析法建立了椭圆柱形物体的数学模型。
First, the elliptic cylinder mathematical model has been built by space analysis.
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