曲面

Asimprovement,the paper considers the influence of trim. Heel angle,trim angleand form stability lever are X,Y and Z axis so that three-dimensional curvecan be achieved which is shown as cellular figure picturesquely. It is called"stability interpolation area curve" in the paper.

本图谱较以往有所突破，计入了纵倾的影响使之参与平衡，在此基础上，以横倾角、纵倾角和形状稳性臂为三坐标轴绘出三维空间曲线，并以网格形象地展示出一空间曲面，称为"稳性插值曲面"。

Firstly, this paper assumes that the surface of range image is piecewise smooth, and estimates curvature from the smooth piece of surface to which the current point belongs.

首先，提出曲面是分片光滑的假设，表面曲率需从该像素所属的光滑曲面片来估计。

The study of this dissertation analyses the focus system technology, which is the key technology of curve plane surface lithographic fabrication techniques.

本文重点讨论了曲面光刻的关键技术——自动调焦系统，并对曲面工艺及光刻线条进行实验分析。

A recognition method of discrete points on trimmed surface is presented, which is based on the plane domain of surface parameter. The approach changes the recognition from the complex 3D space to the simple parameter plane artfully.

针对目前常用商业CAD系统在复杂参数曲面有效离散方面所存在的不足，结合实际工程设计与应用方面的需要，提出了一种基于二维参数域的裁剪曲面有效离散点的识别方法。

Based on projection principle, a method for surface/plane intersection is presented.

在船体曲面造型设计中，常用到曲面与平面的求交运算。

The techniques for obtaining initial tracing points and tracing intersection branches are the most important issues in surface intersection algorithm. This paper reviews the plane vector field method which is exploited to get initial tracing points,and gives the relation between normal curvature and tracing direction.

平面向量场与曲率分析在曲面求交中的应用宁涛，马德昌，王亚平，唐荣锡（北京航空航天大学制造工程系北京100083）摘要在曲面求交算法中，初始跟踪点的确定和交线分支的跟踪是最关键的两个问题。

In chapter 4, with regard to the structure characteristics of honeycomb core part, a global G1 continuous compound surface model construction method is presented from the point of view of surface continuity and manufacturability.

第四章首先针对蜂窝芯零件的结构特点，从曲面整体连续性和可加工性的角度出发，提出一种带有复杂过渡区域的组合曲面整体G~1连续模型的建立方法。

In this paper, we survey the development of polynomial approximation of rational curves and state the knowledge of interval curves in the first chapter.

本论文中，第一章首先介绍了有理曲线曲面的多项式逼近研究工作的发展情况和区间曲线曲面一些相关知识。

By using the Li e group theory of differential geometry and Pontryagin's maximum principle, it is pointed out that the mobile CRS robot on surface is controllable, and the nec essary conditions and the structure equations of extremal trajectories are propo sed.

为了解决曲面上移动CRS机器人的路径规划问题，在曲面上建立了机器人的动态模型，利用微分几何的李群理论和庞特里亚金最大值原理，证明了曲面上CRS机器人是可控的，并给出了机器人的最小时间控制的必要条件和结构方程。

For example, quadratic curve and quadric surface are used as primitive element in most modeling/CAD system. The implicit formulae for computing the intrinsic geometric invariant??

随着对参数曲线曲面研究的深入，早在80年代初苏步青教授等就将几何不变量的研究引入并应用到参数曲线、曲面的研究中，取得了重要的成果［1？

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。