查询词典 parametric curve

The discretized frictional contact problems can be reduced as a linear complementarity problem using parametric variational principle and parametric quadratic programming method. Then we can apply the algorithms proposed in this thesis to the solution of the contact problems.

利用参变量变分原理和参数二次规划法，离散后的接触问题可化为线性互补问题，之后，将第二、三章提出的互补问题算法应用到接触问题的数值求解中。

In Chapter 5, we study three dimensional elasto-plastic frictional contact problems with orthotropic friction law. Parametric variational principle and parametric quadratic programming method are applied to analyze this class of complicated mechanics problems. A linear complementarity problem formulation is derived.

在第五章，我们采用正交各向异性摩擦定律模型对三维弹塑性摩擦接触问题进行分析，将正交各向异性的摩擦定律线性化后，将参变量变分原理和参数二次规划法应用到这一复杂的力学问题中来，最终将问题化为线性互补问题模型。

The nested parametric graphics and the hidden-line-remove algorithms are developed to support the parametric assembly representation.

提出的参数化图形多层嵌套、消隐区概念和参数化图形的二维动态消隐算法，能方便地支持产品装配图的参数化表示。

First it concludes elementary methods for product modeling such as feature recognition, feature-based design and feature mapping. Then it probes into the mechanism of constraint-based feature parametric modeling, representation of feature parametric model and methods for solving constraint in details. At the end it proposes a feature-based modeling system that makes good use of resources and synthesizes many feature modeling methods, and analyses the development of prototype system oriented to actual application.

首先全面归纳了基本的基于特征的产品建模方法，包括特征识别、基于特征设计和特征映射方法，然后对基于约束的特征参数化建模、特征参数化模型的表达和定义方法以及约束求解方法进行了深入研究，最后提出了一个充分利用现有资源，特征识别、基于特征设计和特征映射共用的特征建模系统，并探讨了面向实际应用的原型系统的开发技术。

Based on a general parametric eigenstructure assignment result proposed for descriptor linear systems via proportional plus partial derivative state feedback and a result for generalized eigenvalue sensitivity problem of matrix pairs, parametric representation of the closed-loop eigenvalue sensitivities to the perturbed elements in the open-loop system matrices is obtained. An effective algorithm for eigenvalue assignment with minimum sensitivity in descriptor linear systems via proportional plus partial derivative state feedback is then proposed.

摘要基于广义线性系统比例与部分状态导数反馈参数化特征结构配置结果和矩阵对广义特征值灵敏度结果，得到了关于开环系统矩阵中摄动元素的闭环特征值灵敏度的参数表达式，并在此基础上提出了广义线性系统比例与部分状态导数反馈最小灵敏度特征值配置的有效算法。

Proposed surface geometric operations and the improved data structure can be applied for a general parametric surface and for representing solid bounded by other parametric surface.

所提出的曲面几何处理的算法，改进的可统一表示曲面、实体模型的数据结构亦可应用于一般的参数曲面几何处理与曲面实体模型的表示。

A new approach for the surface reconstruction with arbitrary topology by parametric patches fitting is presented, where the surface is divided into patches and each is reconstructed by a parametric surface.

提出了基于平方距离函数的曲面分片参数化重构方法，实现了任意拓扑结构模型表面的参数化重构。

The paper applies parametric and non-parametric test regression analysis to examine the relation between capital structure and long-term bank debt use analyzing the effects of bank screening and monitoring on capital structure.

本文使用参数和非参数检验程序、回归分析检查了资本结构和长期银行债务使用之间的关系。分析了银行审查和监督对资本结构的影响。

The paper applies descriptive statistics, parametric and non-parametric test to systematically analyse the overall and industry features of Chinese listed companies' debt financing structure.

本文采用描述性统计、参数和非参数检验等方法对中国上市公司债务融资结构的总体特征和行业特征进行系统的分析。

The paper applies parametric and non-parametric test, descriptive statistics to empirically examine the relationship between industry classification and the choice of corporate debt maturity structure.

本文采用参数和非参数检验，描述性统计等方法实证检查行业类别和公司债务期限结构选择之间关系。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。