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1·Work coordinate system is constructed by mixing matrix representation and parametric representation.

坐标系使用矩阵与参数两种方式表示。

2·The parametric representations of curved surface and curve line are given. The advantage of this representation is also analyzed.

给出曲面、曲线的参数表示法，并且分析了参数表示法的优越性。

3·As soon as the parametric representation of the sculptured surface is known, the NC machining path on it is determined for the nonspherical cutters.

只要已知被加工曲面的参数表达式，就可运用点涉法在该曲面上生成非球面刀的数控加工轨迹。

4·The fuzzy numbers with bounded support and strictly fuzzy convexity is introduced and the couple parametric representation of fuzzy numbers is given.

介绍具有有界支撑且严格模糊凸的模糊数，并且给出模糊数的双参数表示。

5·By the parametric representation, fuzzy number means a bounded continuous curve in the two-dimensional metric space R2, so that it is easy to analyze fuzzy differential equations.

在此参数表示下，模糊数可直接视为二维度量空间r 2中的有界连续曲线，这给分析模糊微分方程带来了便利。

6·As the parametric representation of primitives is low dimensional, the integration of primitives and state-based recognition algorithms helps realize some more complex recognition models.

由于基元特征参数的维数低，因此，它与基于状态的各种识别方法相结合有利于实现更复杂识别方法。