查询词典 graph theory

With the theory of bond graph, the bond graph models of extension mode and retraction mode were established.

应用键合图理论，建立了液压缸伸出和缩进两个工况的键合图模型。

Furthermore, this model is expanded in two aspects: on the one hand, through the introduction of the theory of the Fault Tree, this thesis analyzes the difference between the fault-diagnosis in the recovering flow and that in the traditional flow, thus concluding that the fault-diagnosis in the recovering flow is just a tracing-back process of the directed-graph and the Fault Tree; on the other hand, a finite self-restoring state machine is constructed on the directed-graph model, thus providing the theoretical basis for the realization of the auto-recovery model.

随后在两个方面对该模型进行了扩展：1。通过引入故障树的方法，并在分析了恢复流程故障诊断与传统故障诊断的差异之后，总结出恢复流程的故障诊断就是一个基于有向图和故障树进行回溯的过程；2。基于有向图模型建立了一个有穷自动状态机，为自动恢复与模型的实现提供了理论基础。

In graph theory, a tree is a simple graph with no circles.

在图论中，树是一个不含圈的简单连通图。

The symbolical, decorative, subjective and formulistic theory and technique are widely applied in modern plane design. The longitudinal and transverse inheritance of the traditional graph is also discussed in the thesis. Modern art design tries to inherit the essence of traditional graph by making use of its form.

传统图形色彩的象征性、装饰性、主观性、程式化的色彩学理论与技术被广泛应用于平面设计中；本文同时讨论了传统图形在平面设计中的纵向与横向的传承，在现代艺术设计中对传统图形取其形、达其意、传其神；中华民族长期以来既创造了浩如烟海的图形精品，也创立了包括哲学思想、构图意蕴、构成法则、色彩学等完整的艺术设计理论体系。

The matrix equation of the sectorial coordinate has been deduced by making use of the graph theory and energy principle after creating the graph model of the box girder section.

利用图论的基本原理建立箱梁断面的图论模型，并结合能量原理，推导出求解扇性坐标的矩阵方程。

In order to get out from the cockamamie work in road route design for designers, on the basis of studying the internal relations among local schemes, local scheme was decomposed to small unit logic schemes; the directed network was used to represent the topological connection; the united data structure of point-arc was used to express a network graph. Based on the shortest path theory, the combinatorial optimization algorithm that can search optimal logical schemes of some targets in the network graph intelligently and can form the whole scheme automatically was put forward.

为了使设计者从道路线路设计的繁重计算统计工作中解脱出来，在研究了局部方案间内在关联的基础上，提出了将局部方案分解为更小单位的逻辑方案，用有向网络图表示逻辑方案间的拓扑关系，采用节点－弧段联合数据结构来表示网络图；同时基于最短路径理论，提出了在网络图中智能化搜索综合指标最优的逻辑方案集，自动形成整体方案的组合优化算法。

An electromagnetic power steering kinematics model is built combined with the sensor and power equipment"s kinematics characteristic, then according to bond graph theory the bond graph model and diamond model of the electromagnetic power steering system are built based on the kinematics model. They could lead to the system"s transfer function, which is combined with automobile"s two freedom degree model, finally leads to the system"s model in condition with step input of steering wheel.

结合转矩传感器和电磁力发生装置的动力学特性建立了电磁式助力转向系统的动力学模型，然后在系统的动力学模型的基础上根据键合图理论建立了电磁式助力转向系统的键合图模型及其方块图模型，从而导出系统的传递函数，再结合二自由度汽车模型，最终建立了系统在方向盘转角阶跃输入下的模型。

For kinematic pairs modularizing, the kinematic function vertices, opening edges and self-closed edges were introduced to the elementary linear graph, and enrich the symbols of the linear graph theory. The various combinations consisted of mechanical members were dealt with as a whole module separativly, instead of being assembled with many basic modules belonged to conventional package.

针对运动副组件的模块化，提出了机构功能点、开口边线、自封闭边线等概念，对传统线性图的工具元素进行了扩充；依据复杂机械组合件的独立性，把它们作为整体建立独立的模块，以取代传统环境中的基本元件连接建模。

The study of operation of lattice dicision-making By applying the concept, theory, method of lattice theory and graph theory, defining and stipulating the method which can reflect the superior or inferior relation among different elements on lattice, and the variable, parameter, operation rule and the compare method, For example, the preference distance and it's working with relecting the superior or inferior relation among different elements on lattice.

借助格论和图论中的有关概念、理论和方法，定义和规定了能描述格上不同元素之间优劣关系及其联系强度的变量、参数、运算规则及其比较方法，如反映不同决策方案的优劣程度差别的"偏好距离"及其计算，并将此理论运用到了具有区间数的群决策问题中去，给出了区间数的一种格序排列方法。

With the support of GIS , the minimal spanning tree theory of graph theory and 120 project theory can be applied to irrigation pipelines layout optimization .

建立以管道输水灌溉系统的年折算费用最小为目标函数的管径优化线性规划模型，并将内点法应用于线性优化模型的求解。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。