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三维系统     
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  3 d system
     Microcomputer Plastics Injection Mould CAD 3D System IPMCAD 3.0
     微机注塑模CAD三维系统IPMCAD 3.0
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     The process in which the rapid feed back to the alteration of purpose is realized, the history design is maintenanced and the design method of layout based on the mechanism of mapping and code/decode is presented, which has been successfully implemented in the 3D system of INTESOLID.
     实现设计过程对设计意图变更的快速反应 ,并能维护设计历史 ,提出了基于映射和编码 /解码机制的布局设计方法 ,并将这种方法应用于三维系统INTESOLID2 .0上取得成功
短句来源
     The Research on the Deformation Mechanism and Physical Modeling 3D System of Shaft Failure in Xuhuai Area
     徐淮地区竖井变形破坏机理三维系统物理模拟实验研究
短句来源
     The Research on the Deformation Mechanism and Numerical Modeling 3D System of Shaft Failure in Xuhuai Area
     徐淮地区竖井变形破坏机理三维系统数值模拟分析研究
短句来源
     Research on the Geological Model for 3D System of Mining Area in Shandong Yanzhou
     山东兖州矿区三维系统地质模型研究
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  three-dimensional system
     The ERP system modeling technology mentioned above is just based on the three-dimensional system modeling frame model, and it is further discussed in the two aspects of this model: business analysis and system model mapping dynamically.
     在具体建模时,我们借鉴了RUP(Rational统一过程)框架模型,结合基于CIM-OSA建模体系构架的五个领域业务分析视角,提出了基于UML的三维系统建模框架模型,并且围绕该模型的领域和层次两个维度展开讨论,提出了基于三维系统建模框架模型的ERP系统建模机制与方法。
短句来源
     Three-dimensional System Theory of Regional Sustainable Development
     区域可持续发展三维系统理论初探
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     This is a three-dimensional system with parameter a* describing the green/red percentage and parameter b* the blue/yellow percentage of a color. L* represents the lightness of a color.
     在该三维系统中,参数a*和b*分别描述绿/红和蓝/黄颜色的比例,参数L*用来描述颜色的浅淡。
短句来源
     Solution of The Inverse Wall Radiative Load Problem in Three-dimensional System Using The Monte-Carlo Method and The Conjugate Gradient Method
     用共轭梯度法与蒙特卡洛法求解三维系统的辐射热负荷反问题
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     With dynamic optimization and Pontryagin maximum principle,a three-dimensional system is set up,and its stability is analyzed. The conclusion shows that public expenditure and the efficiency of environmental management have important influence on environmental quality,capital and consumption.
     通过动态最优化方法,运用Pontryagin极大值原理,得到一个三维系统,分析了系统的稳定性,导出了政府花费、环境管理的效率对均衡的环境质量、资本存量和消费的影响机制。
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  three dimensional system
     Forming Technology and Injection Mould Design for PP Spray Gun of Core Pulling at Three Dimensional System
     三维系统抽芯的PP喷枪成型工艺及注射模具设计
短句来源
     Solved under the magnanimous data environment to guard against floods information fast processing, inquiry, analysis and so on crucial the technology, has completed the entire province 1: 250,000 three dimensional scenes as well as Dawen River basins 1: 10,000 three dimensional scenes constructions, and has connected the flood-control works database, has realized the partial flood-control works information three dimensional inquiry, has realized the hydrodynamic force model in three dimensional system application.
     解决了海量数据环境下防汛信息快速处理、查询、分析等关键性技术,完成了全省1∶25万三维场景以及大汶河流域1∶1万三维场景建设,并连接了防洪工程数据库,实现了部分防洪工程信息的三维查询,实现了水动力模型在三维系统中的应用。
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     The present research methods on gait identification system is analyzed,classified and summed up in this paper. On the basis of existing research methods,a new method based on three dimensional system modeling tracking is described.
     对目前步态识别系统的研究方法进行了分析、归类与总结,并在原有的研究方法基础上提出了三维系统建模与跟踪新方法.
短句来源
     The day fluctuation of geomagnetic field is less than(3 μT) based on the data from three dimensional system.
     三维系统测地磁场数据统计表明:当日地磁场变化不超过3μT。
短句来源
  “三维系统”译为未确定词的双语例句
     Using the method of rapid static positioning cooperated with tape measure, it is concluded that except some points, the positioning was relatively precise, the average value of RMS was 2.84, variance was 2.96, and △B, △L, and △H were 1.2, 1.2, and 4.3m with their variances being ±0.6, ±1. 1, and ±21.1, respectively, which could meet the needs of forestry management sufficiently.
     将快速静态定位与局部皮尺检测相结合 ,除个别点偏差较大外 ,定位相对比较精确 ,RMS平均为 2 .84 ,平均三维系统误差分别为 :△B =1 .2m ,△L =1 .2m ,△H =4 .3m ,均方差分别是± 0 .6 ,± 1 .1 ,± 2 1 .1 ,能够满足于森林经营与管理的需要 .
短句来源
     By analyzing the existing Web GIS system based on VRML,its disadvantages were pointed out andthe next generationstandard for Web3D — X3D(Extensible 3D specification.)
     Web GIS正经历着从二维系统到三维系统的发展,分析了现有基于VRML的三维Web GIS,并指出其中的缺点。 介绍了新一代三维网络图形标准X3D,并结合Web GIS本身的特点,提出了基于X3D的三维Web GIS模型。
短句来源
     Design and application of a 3D measurement system for diagnosing parameters of the shape of surface
     用于外形参数诊断的三维系统的设计与应用
短句来源
     Design and Application of a 3-D Measurement System on Diagnostic Parameters of the Shape of Surface
     一种用于外形参数诊断的三维系统的设计与应用
短句来源
     Results Two judgement theorems on three-dimension system bifurcate space periodic solution are obtained.
     结果得到了两个判断一般三维系统从闭轨分支空间周期解的定理。
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  3 d system
This transformation proceeds gradually that is, the 1D condensation process exhibits no features characteristic of the phase transition in a 3D system.
      
The AMB and PLB attachment sites in 35 dissected cadaver knees were measured with a 3D system, as were anatomical landmarks of femur and tibia.
      
The VECTRA-3D system was validated to determine its minimum resolution and accuracy.
      
The surgeons tended to favor the 3D system despite their use of 2D systems in their own practice.
      
Ventricular volumes were also obtained by a simplified 3D system using only the three standard apical views (C) and by the ordinary biplane Simpson's method (D).
      
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  three-dimensional system
A planar representation of the three-dimensional system of strictly homogeneous linear inequalities was considered.
      
A three-dimensional system of jumps also develops in the jet itself.
      
The method allows an aerodynamically sound transition from the three-dimensional system of equations of gas dynamics to a two-dimensional system, which considerably simplifies the problem and reduces by an order the machine time required.
      
In the LiKZnP2O7 structure, the zinc phosphate anion of the same composition has the form of a three-dimensional skeleton with a three-dimensional system of channels.
      
The structural components are joined together via a three-dimensional system of hydrogen bonds.
      
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  three dimensional system
For radiative direct exchange areas in three dimensional system, the Uniform Deterministic Discrete Method (UDDM) was adopted.
      
The numerical examples of direct exchange area in three dimensional system with nonhomogeneous attenuation coefficients indicated that the UDDM can give very high numerical accuracy.
      
In the paper, a stationary temperature field in a three dimensional system of a direct floor heater was modelled.
      
A three dimensional system of ordinary differential equations modeling two predators competing for a renewable resource is analyzed and a periodic solution established in the open octant by a bifurcation from a two dimensional limit cycle.
      
How do red wood ants orient when foraging in a three dimensional system I.
      
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  其他


The accuracies of geodetic heights of terrestrial net are important for selecting of the approch of combined satellite and terrestrial net adjustment. Starting from the basic mathematical model for the combined adjustment of two nets, a general expression for the effects of small changes in the initial values of geodetic coordinates of terrestrial net on the corresponding adjusted values of the coordinates in the combined adjustment has been derived in this paper. By using a simulative net, the authors computed...

The accuracies of geodetic heights of terrestrial net are important for selecting of the approch of combined satellite and terrestrial net adjustment. Starting from the basic mathematical model for the combined adjustment of two nets, a general expression for the effects of small changes in the initial values of geodetic coordinates of terrestrial net on the corresponding adjusted values of the coordinates in the combined adjustment has been derived in this paper. By using a simulative net, the authors computed the corresponding coefficient matrices which represent the effects of the changes in geodetic latitudes, longitudes, and heights on the adjusted values in the combined adjustment. The matrices show that if the accuracies of the components of geodetic coordinates of terrestrial net are nearly on a level with each other, through the combined adjustment the residuals of the adjueted geodetic latitudes induced respectively by the standard errors of the components are held in the same magnitudes。According to the results of the numerical calculations and analyses on the simulative net, it comes to the conclusions that the accuracies of either heights or positions in two-dimensinnal space are of the same significance for the combined adjustment in threedimensional coordinate system, however, it does not mean that the same magnitude of accuracies of the heights and the positions are required o An important problem lies in reliable acquisition of the information about their accuracies. It is preferable that the combined adiustment should be carried out in three-dimensional coordinate system provided the accuracies of geodetic heights can be reliablely determined, even though the accuracies of geodetic heights are low。When the determination of the reliable accuracies of heights is difficult, the assignment of a smaller weight to geodetic heights may significantly weaken the unfavorable effects on the results of the adjustment。It is likely more appropreate to perform the combined adjustment in three-dimensional coordinate syste mthan in two-dimensional space where the components of the heights are abandoned, though the useful information contributed by heights to the adjustment would be lost in a certain extent。

在地面网与卫星网的联合平差中,地面网大地高程的精度对于平差方法的选择具有重要意义。本文从两网联合平差的基本数学模型出发,导出了地面网点大地坐标的微变化对联合平差后相应坐标平差值影响的一般表达式。并利用模拟同分别计算了表征大地经纬度和高程的变化对联合平差后大地坐标影响的相应系数矩阵。该系数矩阵表明,如果地面网大地坐标各分量的精度相近,则它们通过联合平差各自引起的大地纬度平差值的残差将保持同一数量级。根据对模拟网的数值计算结果得出的结论是:在三维坐标系进行联合平差时,高程和平面位置的精度具有同样重要意义,但并不意味着要求两者的精度相当,重要的问题在于可靠地获得它们各自的精度信息。即使大地高程的精度较低,只要能可靠地确定它们的方差与协方差,仍以在三维系统进行联合平差为宜。而当大地高程精度难以可靠地确定时,赋以大地高程较小的权可明显地减弱其对平差结果的不利影响,虽然这样在一定程度上损失了大地高程所提供的有用信息,但此之在二维平差中,放弃大地高程这一分量是更为适宜的。

In this paper,we Consider unconditional stubility of third-order prey-predatory system(1.1)with delay.The unconditional stability domain and conditional stability domain of(1.1)are obtained.

本文研究了捕食者只有成熟期,且成虫 y 仅捕食成虫 x_1的三维系统(1.1)平衡点的稳定性态,得到了系统平衡点无条件稳定性的充要条件以及无条件稳定域与条件稳定域.

MSC/pal is a stress and vibration analysis package for the static and dynamic analysis of mechanical systems,components,and structures running on a personal computer-IBM PC with 256K of memory and two floppy disk drives(a hard disk is not needed).It uses the finite element method to solve displacements,forces and stresses of two-or three-dimensional systems.In addition to extensive tabular output,graphical output is available.A prep- rocessor program provides the way to create input files automatlcally.The interactive...

MSC/pal is a stress and vibration analysis package for the static and dynamic analysis of mechanical systems,components,and structures running on a personal computer-IBM PC with 256K of memory and two floppy disk drives(a hard disk is not needed).It uses the finite element method to solve displacements,forces and stresses of two-or three-dimensional systems.In addition to extensive tabular output,graphical output is available.A prep- rocessor program provides the way to create input files automatlcally.The interactive program is coded in advanced BASIC.It can be modified to suit individual requirements.

MSC/pal 是一个用微机运行的应力和振动分析的软件包,用于对机械系统、部件和结构进行动态和静态分析。该软件要求 IBM PC(或其兼容机)具有内存256K 及两个软盘驱动器(不一定需要硬盘)。该程序用有限元法求解二维或三维系统的位移、受力和应力,并将结果用表列出或图形输出。本文还提出一个预处理程序以便自动生成输入文件。这一对话式程序是用扩展 BASIC 语言写成,并可方便地修改,以适态不同的需要。

 
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