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- bitangent quadrics 双切二次曲面
- We call this surface the stress quadric. 我们称这个曲面为应力二次曲面。
- Conic sections and quadric surfaces. 二次曲线与二次曲面。
- How to prove the problems of inequality by quadric form is discussed. 讨论了利用二次型证明不等式的问题.
- A simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form. 给出了利用初等变换求一个正交变换化实二次型为标准形的简便方法。
- It has appeared many results about regularity for weak solutions of quadric jncreasing parabolic equations. 得到了一类二阶散度型椭圆方程很弱解的一个正则性结果。
- The key idea of SSVM is to transform the standard model of SVM into an unconstraint quadric convex programming problem. SSVM模型的基本思想是将标准的支撑向量机模型转化成一个无约束二次凸规划模型进行求解。
- Extracting quadric surface from measured data is an important problem in reverse engineering of mechanical parts. 摘要在机械产品的逆向工程中，针对测量数据提取常用二次曲面是非常重要的。
- Based on the principle of polar transformation in projective geometry, the authorproposes and proves that two conics on any quadrics are perspective corresponding to each other. 根据射影几何学中的配极对应原理，提出并证明了任意一个二次曲面上的两条二次曲线为透视对应。
- This paper proposes for the first time to use genetic algorithm based on real-number-coding to extract quadric surface. 首次提出利用基于实数编码的遗传算法针对离散数据点进行二次曲面提取。
- The inverse dynamic method of manipulator and the Linear Quadrics (LQ) optimum control method are employed to investigate the problems of trajectory tracking and elimi... 通过数值仿真计算,表明文中方法的有效性。
- On the area of actual process, It is often seen that one surface of the part is quadric surface. 在实际生产中,如果某一加工表面是二次曲面,对于这类曲面轮廓的加工常采用数控加工方法。
- At last, the commonly methods and steps for represention quadric surfaces using NURBS was find. 最后总结出了二次曲面进行NURBS表示的一般方法和步骤。
- Technology parameters were optimized by quadric regression orthogonal rotary design experiments. 结果表明,多糖得率的主要影响因素及其顺序为浸提温度、浸提时间、液固比;
- In this paper, the authors expounded covariance analysis with two correlated variables and solved it with quadric form. 利用二次型解决了双协变量的方差分析方法。
- An algorithm of feature surface recognition based on quadric surface fitting and geometry property was presented. 摘要提出了基于二次曲面拟合误差分析和几何属性分析的特征曲面识别算法。
- In order to solve the problem,this paper put forward an improved mesh simplification algorithm based on quadric error metrics. 为了解决这个问题,本文作者提出一种改进的基于二次误差测度的网格简化算法。
- Then, on this basement, the method of calcutating the control vertecs and weights was given while representing quadric surfaces using NURBS. 在此基础上给出了二次曲面进行NURBS表示时控制顶点和权因子的计算方法。
- The construction of nonlinear normal modes of a system with 1: 2 internal resonance is presented for the case of quadric nonlinearity. 利用多尺度方法研究了一类1:2内共振平方非线性系统的非线性模态的近似解及其分叉特性。
- A new algorithm is presented in this paper for piecewise quadric B-splines curve reconstruction from scattered data in a plane. 摘要基于控制顶点扰动的思想提出了一种新的曲线重构算法，用于构造一条分段二次B样条曲线来逼近平面上的散乱数据点。
