用准圆柱形近似所作的平行的计算表明：就预测旋涡的破裂而言，两种方法的结果相当吻合。

Parallel calculations with the quasi-cylindrical approximation indicate that so far as predicting of breakdown is concerned, its results coincide quite well with the results mentioned above.

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而弹性近似法充分考虑了整体平滑性的要求，对定位有误差的标志点约束的图像配准更为优越。

Another method is thin plate spline elastic approximation, which takes the overall smoothness of the whole image into account, hence it is better when errors of feature points exist.

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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.

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