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1)  Said-Ball curve
Said-Ball曲线
1.
Approximate merging of a pair of Said-Ball curves;
两相邻Said-Ball曲线的近似合并
2.
An approximation method for multi-degree reduction of Said-Ball curves;
Said-Ball曲线的降多阶逼近
3.
Extension of quartic Said-Ball curve
四次Said-Ball曲线的扩展
2)  Wang-Said type generalized Ball curve
Wang-Said型Ball曲线
3)  Said-Ball surface
Said-Ball曲面
4)  interval generalized Ball curves of Wang-Said type
区间Wang-Said型广义Ball曲线
1.
In this paper,interval generalized Ball curves of Wang-Said type(WSGB) is proposed,it can serve as an effective tool for error control and product testing,three methods are investigated for degree reduction of WSGB,namely,perturbation,best uniform approximation method and constrained best uniform approximation method obtained by Chebyshev polynomial.
定义了区间Wang-Said型广义Ball曲线(WSGB曲线),它可作为误差控制和产品检验的有效工具;采用3种方法讨论了其降阶逼近问题,即扰动法、利用Chebyshev多项式导出的最佳一致逼近算法和插值端点的最佳一致逼近方法;给出了各种处理方法的显式误差表示。
5)  Said-Bézier type Ball curves
Said-Bézier型广义Ball曲线
6)  tensor product Said-Ball surface
张量积Said-Ball曲面
1.
Method of approximating tensor product Said-Ball surfaces through multi-degree reduction;
基于广义逆的张量积Said-Ball曲面降多阶逼近
补充资料:falling ball impact test
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性质:将规定质量的球从不同高度落下;或在规定高度下将不同质量的球落下,以测定胶接式样在承受落球冲击下产生裂痕所需的能量的试验。

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