拓扑变换

According to the feature of drawing crystal shape from gnomonic projection,a data structure (the single 3 table chain structure )is presented.

根据极平投影绘晶体形态的特点，建立了一种数据结构———单链三表结构，此结构由面表、线表、点表组成，能充分反映晶体形态的拓扑信息和几何信息，并在此基础上设计了一种适合于变换和消隐处理的数据结

MPT control technique is easy to realize, with great robust ness and good transient performance.

MPT控制方法易于实现，控制系统具有良好的瞬态特性和鲁棒性，可以应用于各种拓扑结构的开关变换器。

Research and Design of Push-Pull Forward and Soft-Switching Circuit

本文结合推挽正激直流变换器和高频脉冲直流环节逆变器的优点，提出了一种适用于低压大电流输入场合的逆变器，并对构成这种逆变器的电路拓扑、SPWM控制策略、稳态原理特性进行了深入的分析研究。

In single-ended forward converter, power transformer is taken as an object, and different working stages are analyzed.

以单端正激电路为对象，以功率变压器为核心，分析了开关变换过程的不同拓扑和工作机理。

This paper introduces the single-phase and three-phase matrix converter basic principle and circuit topology.

本文首先介绍了单相和三相矩阵式变换器的基本工作原理及其电路拓扑结构。

The topology of the step-up DC/DC converters and its basic principle is first analyzed in this thesis.

本文首先介绍了升压型DC/DC变换器的拓扑结构和基本工作原理。

The topological entropy is an important tool for analyzing so-called chaotic behavior, and the method of symbolic dynamics transforms a continuous scenario into a discrete one.

拓扑熵是分析所谓混沌性的一个重要工具，是从连续到离散情形的符号动力学变换的方法。

It investigates mainly infinite matrix conver-gence、infinite matrix transformations、the automatic continuity and boundedness of infinitematrix operators、infinite matrix topological algebras、invariant theory、infinite matrix meth-ods、compact operators series and Eberlein-Smulian theorem,etc.

主要研究了无穷矩阵收敛、无穷矩阵变换、无穷矩阵算子的自连续性和自有界性、无穷矩阵拓扑代数、不变性理论、无穷矩阵方法、紧算子级数与Eberlein-Smulian定理等。

In mathematics , a topological space with a family of local coordinate systems related to each other by certain classes of coordinate transformations.

数学中指装配了一族局部坐标系的拓扑空间，这些局部坐标系之间由特定的坐标变换相互联系。

In mathematics, a topological space with a family of local coordinate systems related to each other by certain classes of coordinate transformation s.

数学中指装配了一族局部坐标系的拓扑空间，这些局部坐标系之间由特定的坐标变换相互联系。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。