查询词典 projective pencil of lines

In the CAD system for progressive dies, the method is introduced to automatically generate geometric models of stampings through inputting the product drawings by AutoCAD and picking-up the entity information from DXF files and programming with ObjectARX and C＋＋ language, at the same time, generating algorithm of close contour lines and unidirectional chain-table structure are used to express the models of stampings, the class and direct judgment of contour lines are realized and the entity existing side is judged by analytical geometry, which efficiently solves the problem of automatic input of drawings of stamping and providing information of process planning and mold design.

在级进模CAD系统中，将产品的图形信息以AutoCAD直接绘图形式输入到计算机中，从AutoCAD的图形交换文件中提取信息，采用面向对象的二次开发工具ObjectARX和C＋＋语言编写接口程序，并通过封闭轮廓的生成算法自动生成冲裁零件的几何模型，且用单向链表的形式加以表达，同时对冲裁零件图形的轮廓进行分类与走向判定，采用简单的解析几何方法对实体存在侧进行判定，有效地实现了零件图形的自动输入，为级进模CAD系统的工艺计算和模具工作部分的设计等提供了必要的信息。

An adaptive grid scheme controlling cell area is used to generated grids in the divergent section of symmetric annular nozzle, and the generated grids are used in the flowfield calculation through the uncoupled way. The elliptic equations are used to generate grids in three dimensional regions of FDN divergent section, the source terms used in the equations employ a mathematical form which is independent of the boundary shape and of the boundary grid point distribution, the free parameters contained in the source terms are determined by the two restraint conditions, the intersection angle of transverse grid lines with boundaries and the local curvature of the transverse grid lines at the boundaries, and the interior grid distribution controlled directly by the grid point distribution assigned on the boundaries is realized, it makes the grid more clustering near the nozzle wall. For the generated grids in the whole computational regions have a good smoothness and orthogonality, the accuracy of calculation in the flowfield is ensured.

对轴对称的环形喷管采用控制网格面积的自适应网格方法对扩散段部分进行了网格生成，并通过非耦合方式应用于喷管的流场计算中；对强制偏流喷管扩散段内的三维区域采用椭圆型方程进行网格生成，方程中的源项采用了与边界形状和边界网格点分布无关的数学形式，源项内的自由参数由横向网格线与边界的交角及横向网格线在边界处的局部曲率两个约束条件来确定，实现了由边界上的网格分布直接控制内部的网格点，使壁面附近具有较密集的网格，并且在整个计算区域内的网格都具有良好的光滑性和正交性，从而保证了流场计算的准确性。

Feature of principal lines spatial distribution: detect the principal lines through edge detecting technology, and then divide the image of palmprint into blocks with same dimension, compute the mean and variance as feature; Feature of palmprint direction: divide the image into sub-images; compute the max angle of projection and coordinate of each sub-image, which stand for the direction and location of the line on the palm; Feature of moment invariants: compute the moment invariants of each sub-image and the whole image as feature.

掌纹主线空间分布特征：利用边缘检测技术检测出掌纹的主线，将图像分割成相同大小互不重叠的子图，提取每一个子图的均值和方差作为特征；掌纹线方向特征：将图像分成不重叠的子图，利用Radon变换求出每一个子图的最大投影角度和坐标，也就是子图内掌纹线的方向和位置，构造特征向量；掌纹不变矩特征：提取图像整体和分割后的子图的不变矩作为特征。

Responsibilities:To provide critical and complex technical machines/automatic lines for Schneider China and APOD with competitive price, all know-how embeded should be kept inside schneider To pilot the supplier during machines/lines...

施耐德电气公司施耐德电气公司作为一个专业致力于电气工业领域的电气公司，拥有悠久的历史和强大的实力，输配电，工业控制和自动化是施耐德电气携手并进的两大领域。

Responsibility To provide critical and complex technical machines/automatic lines for Schneider China and APOD with competitive price, all know-how embeded should be kept inside schneider To pilot the supplier during machines/lines...

施耐德电气公司施耐德电气公司作为一个专业致力于电气工业领域的电气公司，拥有悠久的历史和强大的实力，输配电，工业控制和自动化是施耐德电气携手并进的两大领域。

Its core technology is the production of continuous roll-to-roll electroplating lines, hardware plastic electroplating lines, as well as fabrication of aqua pura production systems, tail gas treatment systems, on-line recovery systems, water recycling systems, commutation machines and filtration related equipment.

其核心技术为连续性卷对卷电镀生产线、五金塑料电镀生产线，并从事相关的纯水生产系统、在线回收系统、中水回用系统、废气处理系统、整流机及过滤机等相关配套设备的生产制造。

Product characteristics : 1, excellent heat resistance : can adapt to the use of power lines due process overload and short circuit of the high temperature; 2, excellent electrical properties : material for the performance of their higher intensity and volume resistivity of insulation, security is good; 3. excellent corrosion resistance and anti-aging properties : apply to the soil and working environment, long life; 4. excellent flame retardance : difficult combustion; 5, smooth wall formation, the friction coefficient, good wear resistance : in the installation process can greatly reduce the damage to power lines, improve work efficiency; with the traditional asbestos cement pipes, the The product is light weight, good flexibility, earthquake-resistant and differential settlement, and not at the construction site encapsulation pouring concrete; Transport construction is simple, low cost, can greatly shorten the construction period.

产品特点： 1、优良的耐热性能：能适应电力电缆使用过程因过载短路而产生的高温； 2、优良的电气性能：材料自身表现为较高绝缘强度和体积电阻率，安全性好； 3、优异的耐腐蚀性能和抗老化性能：适用于各种土壤和工作环境，使用寿命长； 4、优良的阻燃性能：不易燃烧； 5、内壁光滑平整、摩擦系数小，耐磨性能好：在敷设过程中可大大降低对电缆的损害，提高工作效率；与传统的石棉水泥管相比，产品的重量轻、柔性好、抗震性及抗不均匀沉降好，无须在施工现场包封浇混凝土；运输施工简便，费用低，可大大缩短工期。

According to the stability of vanishing points of the projected lines on the image of a group of lines at infinity,the algorithms for camera calibration and indoor visual navigation of the autonomous mobile platform based on parallel s are proposed.

根据一组空间直线上的无穷远线素集在视平面上所形成的消失点对直线的平移具有稳定性的特点，提出了基于平行线的摄像机参数标定和自主移动平台室内视觉导航算法。

According to the stability of vanishing points of the projected lines on the image of a group of lines at infinity, the algorithms for camera calibration and indoor visual navigation of the autonomous mobile platform based on parallels are proposed.

根据一组空间直线上的无穷远线素集在视平面上所形成的消失点对直线的平移具有稳定性的特点，提出了基于平行线的摄像机参数标定和自主移动平台室内视觉导航算法。

Strong technical force, with the current domestic and foreign advanced production equipment and testing equipment, professional production is below 35 kV power cables and control cables, electrical equipment used wire and cable insulation overhead power lines, bare copper wire, bare aluminum, computer cables, Various types of wire cloth, with branch lines, cables and rubber products above the fire-retardant, fire-resistant products, fire-retardant fire-resistant communications with the soft power of the modern cable business.

技术力量雄厚，拥有目前国内外先进的生产设备和检测设备，是专业生产35kV及以下电力电缆、控制电缆、电气装备用电线电缆、绝缘架空电缆、裸铜线、裸铝线、电子计算机电缆、各类布电线、带分支电缆、橡套电缆及上述产品的阻燃、耐火型产品、通信电源用阻燃耐火软电缆的现代化企业。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。