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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。

The numerical non-stability of a discrete algorithm of topology optimization can result fi＇om the inaccurate evaluation of element sensitivities, especially, when material is added to elements.

单元敏度的不准确估计是离散拓扑优化算法数值不稳定的原因之一，特别是添加材料时，传统的敏度计算公式给出的估计误差较大，甚至有时估计符号都是错误的。

The receiver of course features Harman Kardon's high-current, ultrawide-bandwidth amplifier topology with discrete output devices to reproduce digital movie soundtracks and music with unmatched sonic accuracy and dynamic power.

接收器的功能，当然哈曼顿的高电流，超宽带放大器拓扑离散输出设备复制数字电影配乐及音乐声与无与伦比的精度和动态功耗。

All Digital Signal Path from the Disc to the Mark Levinson Discrete Topology Power Amplifiers- Fragile audio signals are often transmitted from the front to the back of the car in an analog format.

从光盘到Mark Levinson独立拓扑功率放大器都采用了全数码信号路径－细腻的声音信号通常以模拟的格式从汽车前排传到后排。

Taking a heavy truck cab as the example, a model of the spotweld space based on finite element was built to analyse the torsional stiffness of the model, and the amount and layout of the spotweld using the discrete variable topology optimization were optimized. Comparing with the original model in welding spot's number and the torsional stiffness, the optimized model has less number of welding spot, but the torsional stiffness of the two model is almost the same.

以某重型卡车驾驶室为例，在有限元模型基础上建立焊点空间模型进行扭转刚度分析，并采用离散变量拓扑优化方法对焊点的数量及空间布局进行优化，通过优化前后的对比可知，优化后在不降低扭转刚度的同时减少了焊点数目。

All Digital Signal Path from the Disc to the Mark Levinson Discrete Topology Power Amplifiers- Fragile audio signals are often transmit ted from the front to the back of the car in an analog format.

从光盘到Mark Levinson独立拓扑功率放大器都采用了全数码信号路径－细腻的声音信号通常以模拟的格式从汽车前排传到后排。

Point clouds are discrete data points without the topology relationship between them. So, to facilitate and expedite the extraction of contour points for the late NPR style, firstly we should simplify the point cloud data. In other words, non-contour points should be eliminated but their contour points and feature points should be retained .

点云数据本身是无拓扑关系的离散数据点集，所以，为了方便和加速后期非真实感绘制风格化所需轮廓点的提取，首先对点云数据进行了"粗略"地简化处理，即剔除点云数据中非轮廓点保留了其轮廓点和特征点；然后应用判定准则提取出所表示物体的轮廓点并对其进行"归并"形成便于NPR风格化处理的特征轮廓线；最后再对得到的轮廓线进行NPR风格化效果"加密"处理。

First, the satellite constellation topology and the satellite network are introduced in this paper. A comprehensive overview on LEO satellite network routing algorithm research status is given, including the comparisons of several major LEO satellite network routing protocols like DT-DVTR(Discrete Time Dynamic Virtual Topology Routing)、AR and FSA.

本文首先介绍了卫星星座的拓扑结构和卫星网络的组网方式，对LEO卫星网络路由算法研究现状进行了综述，对主要的几种LEO卫星网络路由协议如DT-DVTRDiscrete Time Dynamic Virtual Topology Routin(来源：554fABC论文网www.abclunwen.comg、AR和FSA等进行了详细的比较并论述了它们具有的优点和存在的缺点。

The auxiliary technologies for hexahedral mesh generation are studied thoroughly in this article. The technologies mainly cover the parametric description of three-dimensional geometric solid boundary, the controlling of mesh precision by imposing maximum geometric discretization error, the topology analysis of mesh, the optimization of node labeling and the display of mesh with removed hidden lines.

对六面体网格生成的辅助技术进行了较深入的研究，其中主要讨论了三维空间几何实体边界的参数化描述、利用最大几何离散误差来控制网格的离散精度、在对网格的拓扑关系进行正确分析的基础上提出改进的节点编号优化算法以及快速的网格消影显示等技术。

Fourth, the limitations to usethe Allens interval relation pair in describing the directional regions and the commonly-used8 topological relations (disjoint, meet, overlap, cover, coveredby, contain, inside, equal) in 2Dspace were analyzed and refined.

在二维空间中，分析了利用Allen区间关系对方法分别描述方向区域和常用的8大拓扑关系(disjoint，meet，overlap，cover，coveredby，contain，inside，equal)的不足，并改进了现有的方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐