拓扑结构

By utilizing the basic theory of chaos and fractal,on the basis of reading a vast amount of literatureand summing up predecessors achievements,using the three methods of analysis,computation andexperiment,this paper research for the overlapping embedment topology distribution structure of thegeneralized M-J sets and chaos phenomenon in the multi-dimension determinate nonlinear system(such as the cardiac system of species of the different level of evolution,the two-dimensional nonlinearmap,etc).

本文利用混沌与分形的基本理论，在大量阅读文献，总结前人的成果的基础上，采用解析、计算和实验三种手段并用，主要研究了广义M-J集的嵌套拓扑分布结构和多维确定性非线性系统(如进化程度不同物种的心脏系统、二维非线性映射等)中的混沌现象，取得了以下方面的创新

The route space in urban residential district has potential structure relationship as " discrete topology ", because it is full of every possibility of interacting activity.

城市居住区的路径空间因充斥着交互活动的一切可能，具备了潜在的"离散拓扑"的结构关系，对其从历史以及空间的维度上进行比较研究，可以探寻一条有机的城市外部空间设计思考道路。

These servers have relative rule distribution in physical location, which is fit to build the structured topology.

这些服务器在物理位置的分布上相对规则，适合建立结构化拓扑。

Firstly,a node-based topology relationship model of transport network is presented,in which the physical connection and the logical connection are described.Secondly,the structure of search node is defined in the sight of dual graph theory as a solution for turn prohibitions and delays in road intersections.

提出了基于节点的交通网络拓扑关系模型，描述交通网络的物理连通性以及逻辑连通性；根据对偶图的思想，定义搜索节点结构，处理交叉口转向限制和延误；改进传统的Dijkstra算法，提出了基于搜索节点的双向启发式A*算法，使用二叉堆优先级队列存储扩展节点，RB-tree存储标记节点。

Dynamic characteristic topology optimization for continuum structures with random parameters is investigated in this paper.

研究了具有随机参数的连续体结构在频率概率约束下的动力特性拓扑优化问题。

On the basis of the molecular branching index of Randic,by adding Pauling molecular electronegative,a new molecular topological index was proposed and used to correlate between the chemical structures of haloalkane s and their boiling point at normal pressure.

在Rand ic提出的分子支化度指数的基础上，引进了卤原子的电负性，提出了一种新的拓扑指数，并对饱和卤代烃在常压下的沸点与化学结构之间的关系进行研究，建立了回归方程，相关系数达到0.995，预测值与实验值基本吻合

The exemplification results showed that the method proposed is really simple, fast and efficient to the topology optimization of structures.

算例的结果表明，该方法用于桁架结构拓扑优化是简单、快速和有效的。

Electrotopological state index for atom type was employed in the quantitative structure-activity relationship studies on the aliphatic alcohol toxicity to the Tetrahymena pyriformis, tomato, spider, bacterial luciferases, Fathead minnow, and rat.

采用原子类型电拓扑指数为结构描述子，对梨形四膜虫、番茄、红蜘蛛、发光细菌荧光素酶、呆鲦鱼以及鼠的脂肪醇毒性进行了定量构效关系研究。

Because of Flyback topology have many strongpoint structure simplicity、required fewness component、debugging convenience and so on.

这主要是因为反激式拓扑的结构简单、所需的元器件少、调试方便等优点。

Due to the high reliability, high stability and low EMI criterions in auxiliary power supply systems, the half-bridge LLC resonant converter is selected for the front-end converter, the AC bus architecture and full-wave rectifier are as well utilized. The turns-ratio between the AC bus and load converter is 1:1. The effect of beads which are used in the load converters to the resonant circuit is analyzed.

根据辅助电源高可靠性、高稳定性、低电磁干扰、良好的高频隔离的要求，通过对不同拓扑类型的分析比较，选择半桥LLC谐振变换器作为前级变换器，交流母线和零式全波整流结构作为后级变换器，在母线和后级变换器的连接上采用1∶1的隔离变压器连接。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。