因此，含有这种对称网格带的多面体网格的细分极限曲面即为满足曲线插值约束的细分曲面。

As a result, the limit surface of the polygonal mesh containing the symmetric zonal meshes is the subdivision surface satisfying the curve interpolation constrains.

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为了提高大型对称自由曲面的加工效率，提出了一种新型的对称加工方法，并分析了对称加工的特点。

In order to enhance the machining efficiency of a large symmetrical freeform surface, this paper put forward a new concept of symmetrical machining(SM), analyzed the characteristics of SM.

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对用这种方法得到的一个轴对称进水口曲面上压力分布，进行了松弛法计算，还对另一个进行了气流模型试验。

The pressure distribution along the curved wall of an axially symmetric inlet so obtained was calculated by the relaxation method, and that of another was measured from an air-flow model test.

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