topological entity meaning in Chinese
[计] 拓扑实体
Examples
- in short, vector data take the simplest topological entities-points, lines, and polygons-and anchor them within a 2-d cartesian coordinate system to describe geographical features
简言之，矢量数据利用最简单的拓扑实体点、线和多边形，并在二维笛卡尔坐标系统中固定它们来描述地理特征。 - in order to maintain the intent of designers and satisfy them, the concept of the cellular model is put forward based on old design system . methods of naming topological entities and managing constraints are illustrated in this system
为了能够正确地维护设计者的设计意图和满足用户的需求，本文在原系统的基础之上，提出了基于细胞元的特征约束模型，并给出了在拓扑元素编码与约束关系管理体系之下，特征拓扑元素编码和约束关系管理的方法。 - when modifying a feature, in order to maintain the original design intent, it is important to establish the correct correspondence between the previous and current topological entities of a feature model . this problem is known as persistent naming mechanism of topological entities . based on the analysis of existing naming mechanism, a hybrid, simple and effective mechanism is proposed, which is based on both topological faces and design histories
本文在分析当前的已有命名机制和实现的相关工作基础上，提出一个基于面和设计历史的混合拓扑元素永久命名机制，该命名机制采用三个实体命名表来管理和维护命名拓扑元素，由一个两层的表示来支持模型重建，实体模型重建时，系统会自动建立这三个表之间的连接对应关系。 - when modifying a feature, in order to maintain the original design intent, it is important to establish the correct correspondence between the previous and current topological entities of a feature model . this problem is known as persistent naming mechanism of topological entities . based on the analysis of existing naming mechanism, a hybrid, simple and effective mechanism is proposed, which is based on both topological faces and design histories
本文在分析当前的已有命名机制和实现的相关工作基础上，提出一个基于面和设计历史的混合拓扑元素永久命名机制，该命名机制采用三个实体命名表来管理和维护命名拓扑元素，由一个两层的表示来支持模型重建，实体模型重建时，系统会自动建立这三个表之间的连接对应关系。 - how to identity topological entities when rebuild features is a critical problem in feature-based parametric modding system . in the article, author takes the way of entity cod ing to distinguish different entities . the mechanism of coding is clearly expatiated, and some typical examples are presented . at last, the algorithm of decoding is put forward based on set theory
特征造型中的一个关键问题是特征重构时如何有效识别特征所依赖的拓扑实体，本文采用编码记录不同的拓扑实体在特征链中的相对位置，从理论和实践两方面阐述了编码的思想和实际应用，并提出了以集合为基础的译码算法。