csg中文什么意思

例句与用法

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1. In this paper the turbine blade is described by the method of csg and b _ rep mixed . each part of turbine blade has been divided into the meshes with the parameter mapping method . then the process of integrating the sub - block into a whole object is completed with the method of integer coordinate
   本文采用csg与b _ rep混合描述法描述汽轮机叶片的结构，利用参数映射法对汽轮机叶片的每个子块进行网格剖分，然后利用整数坐标实现子块网格集合成整体有限元网格模型。
2. In this thesis , we first introduce the methodology of combinatorial design of testing parameters and the effectiveness of pairwise testing . then we define pair - combinatorial graph ( pcg ) and case sub graph ( csg ) to analyze the pair - cover problem and indicate that to achieve a minimum test set for pairwise testing is an npc problem , but the size of such test set is in a predictable range
   本文首先介绍基于参数组合的测试设计方法和配对覆盖测试方法的有效性，并提出配对组合图( pair - combinatorialgraph ， pcg )和案例子图( casesubgraph ， csg )的概念来描述配对覆盖问题。
3. Hust - caid ( computer aided industry design system developed by harbin university of science and technology ) is a parametric modeling design system based on feature . this system describes entities based on mixed model of boundary representation 、 csg tree and feature description tree ( fdt ) , in which the design of solid model and feature - editing can be completed with rebuilding csg tree and feature description tree . but , in the feature modeling , with the number of features increasing , the design model becomes more and more complex . the efficiency of designing is decreased
   Hust - caid （哈尔滨理工大学计算机辅助工业造型设计系统）是一种基于特征的参数化造型设计系统。该系统在基于b - rep 、 csg树和特征描述树（ fdt ）的混合模型基础之上，利用重用csg树与特征描述树的技术，来完成实体模型的设计与编辑工作。但在特征造型过程中，随着造型体数目的增加，设计模型将变得越来越复杂，由此导致了系统设计效率的降低。
4. After a comparative studying and analyzing three effective strategies for generating pair - cover test set by means of pcg , csg and a series of sample systems " experiments , we present an improved algorithm , which has a rule for ordering parameters extension and also solves constraint parameters problem
   本文还研究和分析了目前已有的三种有效的配对覆盖测试集生成策略，并利用pcg图和csg图分析了它们各自的扩展算法，还通过一组测试样本系统综合分析和比较了它们各自的效果。
5. First , the paper summarizes a group building csg entity and makes combination mode of csg entities clear , by abstracting building model and analyzing building graphic objects . depending on this model , the article describes topology relations of the 3d architecture model inner based on the point , line , surface and entity . finally , in the developing environment vc + + , based on the opengl techniques , 3d building model of tyut office building is implemented by csg
   首先，通过对建筑模型抽取和建筑图形对象的分析，总结了一组描述建筑模型的建筑csg体元，揭示了建筑模型csg体元之间的组合形态，提出一种基于csg的组合建模方案来构造三维建筑模型；然后在此模型基础上进行了基于点、线、面、体的表达方式描述了建筑模型内部拓扑空间关系，简要介绍了建筑模型的体装配方法；最后利用opengl技术在visualc + +下实现了工大办公楼的csg建模实验。