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。
The optimum route planning is one of the best necessary functions for an applied vehicle navigation system which is based on the establishment of the topological structure of the road net.
对于一个实用的车载导航系统，最优路径规划是其必备的十分重要的功能，而道路网络拓扑结构的构建又是最优路径规划的基础。
In Chapter One, we introduce briefly the historic background and notions of topological dynamical system and some known results about topological entropy.
在第一章中，我们简单地介绍拓扑动力系统的历史背景和基本概念，以及拓扑熵方面的一些已知结果。
While we add an appropriate topology to the space, the input-output map will become a topological dynamic system, and we call it CNN symbol dynamic system.
置以合适的拓扑，则这个空间及其输入一输出映射就构成了一个拓扑动力系统，称这个动力系统为CNN符号动力系统。
Objective: To investigate the topological structure properties of cell signaling transduction networks, in order to offer assistance for the research on the complexity of cell signaling system.
目的：探讨细胞信号转导网络的拓扑结构属性，从而为复杂性细胞信号网络系统的研究提供有益帮助。
The thesis links up dynamic load flow analysis and network topological analysis in power system as a whole to take dynamic load flow calculation of real time.
本文将电力系统网络拓扑分析和电力系统的动态潮流两个问题衔结起来，构成一个整体。
Double-loop network (DLN) is an important class of topological structure of the Internet or communication system.
双环网络是计算机互连网络或通讯系统的一类重要拓扑结构。
Based on topological degree theory, periodic solutions for this system under impulsive conditions are studied.
利用拓扑度理论研究了在脉冲条件下这种系统的周期解。
Such a system will have different topological configurations if the quantity of flexible appendages is different.
随着挠性附件的数目的不同，卫星系统的拓扑构型也将有所不同。
The method has been used to construct the topological structure of Qingdao City Water Supplying Pipe Network System.
该方法已应用于青岛市供水管网系统拓扑结构的构造。
The article expatiates the topological architecture of a VOD system based on cooperative cache, designs the static schedule and dynamic migration method in detail, and formalizes the design.
该文阐述了基于协作缓存的视频点播系统的拓扑结构，对静态调度和动态迁移进行了详细设计，并给出了相应的形式化表示。
After tracing and analyzing the geometric structure of control system block diagram, thereby the corresponding topological structure is generated by graph analyzer.
图形分析器通过对控制系统方框图的几何结构进行跟踪探索和结构分析，生成相应的拓扑结构。
Conclusion: it is imperative to study the complexity of cell signaling system by constructing networks model for analysis of its topological structure properties.
结论：通过构建网络模型来分析细胞信号转导网络的拓扑结构属性对复杂性细胞信号系统进行研究是很有必要的。
A new system for structural search based on a high selectivity topological index EAID is proposed.
描述以高选择性拓扑指数EAID为基础构建的结构检索系统。
The thermodynamic system heat balance calculation method based on a topological analysis is considered as the most successful computer based method for calculating thermal power plant heat balance.
热力系统拓扑分析的热平衡计算方法是火电厂热平衡计算中最成功的计算机处理方法。
The topological properties of the delay-time reconstruction transformation of dynamic system are analysed by means of the Jacobian of the transformation.
利用延迟重构变换的雅可比行列式，分析了常微方程系统重构的拓扑性质。
A plotting system capable of automatically forming topological and tidal structures of network is developed.
开发了一套能自动形成网络拓扑结构和潮流结构的绘图系统。
This article introduces the theories, the topological structure and the software design of the wireless monitoring system of power saving setting for streetlamp based on GPRS technology.
文章介绍基于GPRS技术建立的路灯节电器无线监控系统的原理、拓扑结构和软件设计。
The topological structure of the network had important influence on the network system of the car safety.
网络拓扑结构对于汽车安全系统有着重要的影响。
It has been proved that the nature of independence exists in the axiomatic system of Group, Euclidean space, distance space and topological space.
本文证明了：群、欧几里得空间、距离空间和拓扑空间的公理系统的独立性。
At each link of planning and design, common utilization and being topological should be stressed so that enterprise logistic can support the reconfiguration of manufacturing system.
为使企业物流更好地支持制造系统重构，在规划设计的各个环节应突出通用性、可拓扑性。
The paper presents a necessary and sufficient condition for topological dynamical system to be topologically conjugate with a generalized symbolic dynamical system.
本文证明了，拓扑动力系统与广义符号动力系统拓扑共轭的一个充分必要条件。
The topological structure of multi-body system and their lower numbered body array, the composing methods of characteristic matrixes are explained.
阐述了多体系统的拓扑结构、低序体阵列和特征矩阵的构建方法。
Roughly speaking, dynamical systems consist of differential dynamical system, topological dynamical system, infinite dimensional dynamical system, complex dynamical system and ergodic theory etc.
今天的动力系统大致可分为微分动力系统、拓扑动力系统、无穷维动力系统、复动力系统、遍历论等方向。
A good forecast result has been concluded with a topological prediction model of gray system theory based on the observation data of ground water table in Lanxi County.
地下水枯水期水位预报对春季农业生产具有重要意义，利用兰西县地下水水位观测资料，应用灰色系统理论的拓扑预测建立模型进行预测，取得了较好的结。
In this paper, we study weakly chaos on sub-shift of symbol dynamical system, and give a weakly chaotic sub-shift whose topological entropy is zero.
本文讨论了符号动力系统子移位的弱混沌，并得到拓扑熵为零的弱混沌子移位。
In this paper, a topological optimization mathematical model of oil-gas gathering and transforming system is founded, and the computational complexity is discussed.
给出了油气集输系统拓扑布局优化问题的数学模型，对其计算的复杂性进行了分析。
The paper presents a method of changing topological artificial neural network (ANN) to forecast the load of power system.
提出变拓扑人工神经网络（ANN）预报电力系统负荷的方法。
In order to find the conformable and optimal performance topological structure for practical application, we need a criterion of performance evaluation system.
为了能够针对某种实际应用找出适合的最优性能的拓扑架构，我们需要一套标准的性能评估体系。
In this paper, depending on the real problems of the power system harmonics, first describing the classification, topological structure, the advantages and applications of active power filter.
本文从电力系统谐波研究的实际问题出发，首先阐述了有源电力滤波器的分类及拓扑结构以及优势和应用前景。
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