曲面

If you make the blend surface this way, the ducky's neck will be twisted.

如果你在这种情况下混合曲面，鸭子将被扭曲。

Many researchers have worked actively to develop more convenient and effective methods in this area.

众多学者对NURBS曲线曲面的形状修改做了研究，提出了许多有效的形状修改方法。

To be able to assign a different color for the pupil of the eye, the ellipsoid surface has to be split into two parts.

为了能够为眼睛的瞳孔指定不同的颜色，椭圆体曲面不得不打断成两个部分。

Study of the method for controlling the very small distortion of the mask;2. In order to get the distortion of ellipsoidal equipment in space, we can fit the ellipsoidal surface by using coordinates of points spreading around it.

讲述了通用二次曲面拟合的误差方程和法方程的组成，介绍了运用Jacobi变换方法来处理系数相关性问题和法方程的求解，还介绍了将通用系数形式转化为标准椭球方程的方法，从而求得观测坐标系与椭球主轴坐标系之间的关系，最后求得椭球在空间的位置、方向和大小，以及椭球体的形变值。

2If K≠0,then S can be parameterized as S is a quadratic cone or a elliptic cylinder.

2如果K=0，则曲面S可以表示成此时S是一个二次锥面或椭圆柱面。

In this paper,the radiation from a monopole on an elliptic cylinder is discussed by UTD for convex surfaces and two examples are given whose results are consistent with experimental data,which proves UTD to be available.

文中以单极天线为例应用UTD的曲面绕射理论对椭圆柱上天线的辐射特性进行了研究，给出了两个相关算例，结果与实际基本吻合。

This paper presents a method for 3D twist blade curved surface design based on the elliptic equations using Partial Differential Equation solutions.

本文以偏微分方程造型为基础，提出了一种基于椭圆型方程的扭叶片三维型面直接设计方法，详细推导了叶型曲面函数，给出了型面方程的求解及其前后缘修正。

Concave design showed better stress performances than convex design both on values and distributions. Rotational freedom was confined by elliptic geometry and resulted in 61.36 MPa von Mises stress, which was larger than the other motions except flexion.

在椭圆曲面设计的分析方面，因其几何外型的限制，在旋转动做下发生了相当高的von Mises应力(61.36MPa)，仅次於该设计於前弯动作下时之值。

Further study will aim on the effect of geometry (long/short axes ratio) and motion patterns on elliptic design.

后续研究将针对椭圆曲面之长短轴设计及其运动型态进行分析。

Namely, we discrete some function surfaces including sphere, elliptic paraboloid and hyperboloid paraboloid as samples, and give the error estimation in order to compare, analyze and explain results.

我们以离散型函数曲面（包括球面，椭球面，双曲抛物面）作为样本，对各种方法的实验结果进行误差统计和分析比较。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。