这和平常的方法是一样的，如果给出，一条曲线的几何描述，就不得不自己判断，什么才是最好的参数化方法。
It is the same method as usual. And if you are being given a geometric description of a curve then, of course, you will have to decide for yourself what the best parameter will be.
近似弧长参数化曲线在CAD和几何造型系统中有着重要的应用。
Nearly Arc Length parameterization curve palyes an important role in CAD and geometric modeling.
曲面参数化是计算机图形学和计算机辅助几何设计中一个非常重要的问题。
Surface parametrization is one of important problems in computer graphics and computer aided geometric design.
本文研究和开发了一个变分几何的参数化造型系统(VGPDA)。
In this paper, a variational geometry based parametric modelling System (VGPDA) is explored and developed.
最后，通过把球面参数化算法和自适应采样算法扩展到平面，我们提出一种基于传统图像压缩技术的几何信号压缩算法。
At last, by generalizing our spherical parameterization algorithm and adaptive sampling scheme to the planar case, we can adopt image compression algorithms to compress geometric signals.
针对一类四次隐式代数曲面，提出一种基于分片的几何参数化方法。
This paper proposes a piecewise geometric approach to parametrize a kind of quartic implicit algebraic surface.
基于约束的参数化几何造型技术是一种新型、快速的造型方法。
Parametric geometry modeling technique based on constraint is a kind of new typed rapid method of modeling.
网格参数化是数字几何处理中的重要问题，而三角网格又是典型的一种网格表示形式。
Mesh surface parameterization is an important problem in Digital Geometry Processing, and triangular mesh is the typical form for mesh representation.
基于几何特征参数化提出了一种支持模型几何外形再设计的重建模型表达和建模方法。
A novel scheme of reconstructed model representation and modeling for innovative styling is presented based on parameterization of geometric features.
微分几何中的曲面论，用两个变量就可以完全参数化一个二维曲面。
According to surface theory in differential geometry, the two-dimensional surface is parameterized by two variables.
PADS是一个基于几何推理的参数化设计系统。
PADS is a parametric design system based on geometric reasoning.
参数化设计的关键是几何约束关系的提取和表达，几何约束的求解及参数化几何模型构造。
The main problems of Parameter design are abstraction and expression of the geometric constraint relationship, solver of geometric constraint and creation of geometry model.
应用表明：ANSYS的模拟精度高，图形显示功能强。应用ANSYS自动寻优功能使RC延迟最佳化几何参数的寻找较为迅速和直观。
Its showed that the auto optimization function of ANSYS can help to rapidly and intuitively seek the optimally geometrical parameters which minimize the RC delay.
此模型能有效捕捉并自动识别服装制板过程中反映用户设计意图的几何约束关系，实现服装纸样的参数化。
This model could capture geometric constraints effectively and distinguish user's intentions automatically in the process of drawing graph theory so as to realize parametric design of apparel pattern.
参数化设计是一种使用重要几何参数快速构造和修改几何模型的造型方法。
Parametric design is a modeling method. It uses important geometric parameters to construct and modify geometric model.
第4章主要解决了齿面的参数化和微分几何结构分析问题，它是实现三阶接触分析理论的基础。
Chapter 4 mainly solved the problems of tooth flank parameterization and the analysis of differential geometric structure, which is the theoretical basis to implement the third order contact analysis.
试验结果表明：水力空化对若丹明B确实有降解作用，处理系统中存在最佳的孔板几何参数和操作运行条件，并且若丹明B的降解速率随修正空化数的减少而增大。
There are the optimal geometric parameters and operating conditions in the system and the degradation rate of rhodamine B increases with decreasing the value of the modified cavitation number.
参数化几何造型可以控制设计元素之间的关系，并且自动更新对模型和工程图所作的修改。
Parameterized model technology can control the relationship between design elements and renew the change of model and engineering drawing automatically.
采用特征对象化的设计思想，在特征造型和3维实体几何造型的基础上，研究液压集成块的3维参数化设计方法。
On the basis of Feature Modeling and 3d Solid Geometry Modeling, with the idea of Object-Oriented Product Design, a 3d Parametric Feature Modeling Method is applied to develop manifold.
其中的第31部分为几何编程接口，该接口使零件库中描述零件族的参数化程序具有可移植性。
Part 31 is about geometric programming interface and by which the expression of parametric shape of description programs is portability.
基于参数化建模模块，构建了LA4V型轴向柱塞泵的几何模型。
Based on parametric modeling module, geometric model of LA4V type axial piston pump was built.
在虚拟环境中，对人体头部变形曲面提取特征并参数化，建立基于弹簧质点系统的标准几何模型；
In a visual environment, the characters of transformative head surface were parametrically drown out and a standard geometrical model of head was established based on the spring mass system.
该方法引入了建立和管理参数化模型的策略，通过扩展一般的图形数据结构统一表示几何约束。
A new strategy of constructing and managing the parametric model is used in used in this method. It extends usual graphics data structure to describe geometric constraint.
本文针对参数化总体设计，提出了基于离散算法的物性快速求解算法，解决了参数化设计中常见的几何特征值快速算法问题。
Based on discrete algorithm, rapid algorithms for geometric mass property calculation are presented in this paper, which are very useful in products' parametric preliminary configuration design.
但是对几何体进行全局参数化是一项耗费巨大的工作，而参数化后的结果仍然带有一定的不确定性。
However, a specific global parameterization is time consuming, and the result is still uncertain in some extend.
在第二章中，对基于关联图形的几何建模参数化思想基础作了阐述。
In chapter 2, the basis of parametric design ideal based on relating-graph is studied.
对于参数化特征造型系统的几何核心的研究，一直是构造成功计算机辅助设计系统的关键技术。
Research on geometric kernel of the feature-based parametric modeling system is one of the most important technologies for buildin...
实现这一方法的要点有：（1 ）建立一个合理的联结翼飞机外形的参数化几何模型；
Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters;
实现这一方法的要点有：（1 ）建立一个合理的联结翼飞机外形的参数化几何模型；
Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters;
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