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拓扑特征 [tuò pū tè zhēng]
topological characteristic
- 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。
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. - 总结了零电压零电流开关全桥PWM技术问世至今各种主要的实现方法,比较分析了它们的拓扑结构、主要工作特征及各自的优势与不足,指出了一种通用性更好的拓扑结构。
The major methods to realize Zero-Voltage and Zero-Current-Switching Full-Bridge PWM are summarized. their basic principles and main feature are compared and analyzed.A topology that is more universal than others is given. - 摘要基于提出的运动链的新的并且易于计算机自动生成的描述方式，即合成度序列和规范邻接矩阵，利用VC++6.0面向对象的程序设计方法，开发出了运动链拓扑图的绘图及其特征描述自动生成软件。
Based on the novel representation method of kinematic chains, which can be carried out by computer easily, namely the synthetic degrees sequence and the canonical adjacency matrix, and VC++ 6.0 software, a practical software has been developed in this paper which can automatically draw the topological graphs of kinematic chains and create their characteristic representations.
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