查询词典 three-dimension space

ABSTRACT This paper summarizes our researches on two key techniques in curve and surface modeling-the geometric approximation techniques and the geometric interpolation techniques. The former includes three types of geometric approximation techniques: Hybrid polynomial approximation to rational curves and surfaces, offset curves and surfaces approximation, interval Bézier curves and surfaces approximation. The latter includes a series of algorithms for shape blending modeling: the MSI algorithm for shape blending between space polylines or trees, the MSI algorithm for shape blending between triangular meshes, and skeleton-based shape blending algorithms using triangular decomposition and star-shape decomposition.

本文是作者对曲线曲面造型中两类核心技术几何逼近技术和几何插值技术的研究成果的总结，其中前者包括有理曲线曲面的Hybrid多项式逼近、等距曲线曲面逼近和区间曲线曲面逼近等三类几何逼近方法；后者包括用于形状混合造型的几何插值方法的一系列算法：空间多边形形状混合的MSI插值算法、三角网格形状混合的MSI插值算法、树的形状混合的MSI插值算法以及基于骨架树形状混合的三角剖分算法和星形剖分算法。

We developed a 2D3V (two dimensional in space and three dimensional in velocity) particle-in-cell code APIC2D.

该程序的主要特点是对粒子模拟中的一些算法进行了优化，主要工作包括： 1、将等离子体粒子模拟中得到广泛应用的Borris旋转推动粒子方法进行了改进。

UCS can also save users 40% in capital expenditures, 19% in cooling over a three-year period, 86% in the amount of cabling and 61% in rack space compared to a legacy 320 blade system, according to Cisco.

据思科说，如果使用UCS三年，用户可节省40％的资本支出和19％的冷却成本，与传统的320刀片系统相比，UCS可节省86％的线缆和61％的机架。

Methods:Three-dimensional(3D) CT imaging reconstruction was performed in 200case of cervical spine without radicular symptom and injury.C_3-C_7 vertebral body horizontal diameter, sagittal diameter,high.vertebral gap.pedicle vertical diameter and horizontal diameter,coronary high,base long of vertebral uncus,space between vertebral uncus point.highness and width of intervertebral foramenand,transverse foramen,The CT data was transferred to a computer workstation,grouping with age and sex,statistical analysis.

材料与方法：选取200名不同年龄段无外伤、无神经症状和体征的受检者，进行多排螺旋CT薄层扫描，在计算机工作站上对获得图像进行多平面重建，获得相应截面图后，测量各相关指标，包括第3至第7颈椎(C_3-C_7)椎体横径、矢状径及高，椎体间隙，椎弓根的高与宽，冠状位钩突高度、钩突基底宽度、基底长、两侧钩突尖间距及基底长径角度，椎间孔高和宽，横突孔长和宽。按性别、年龄分组进行统计学分析。

There are three environments: meadow, space and undersea.

有三个环境：草甸，空间和海底。

The paper Gives detailed analysis for virtual target integration technology in virtual space, the method of VE model simplification and the three-dimensional animation question that the posture changes of the rocket gun garage which is variable motion in VE of naturally undulating features of terrain.

主要针对虚拟空间虚拟对象数据的融合问题、虚拟环境模型的简化算法以及在具有自然起伏地形特征的虚拟环境中，变速运动的火箭炮车行为姿态变化的三维动画问题进行详细的分析。

The mathematical models of dual three phase induction motor in stationary reference frame were obtained, using the concept of vector space decomposition with loss of one stator winding excitation set.

采用空间矢量解耦的方法建立了缺相双三相异步电动机在静止坐标系下的数学模型。

The mathematical models of dual three phase induction motor in stationary reference frame were obtained,using the concept of vector space decomposition with loss of one stator winding excitation set.

摘 要：采用空间矢量解耦的方法建立了缺相双三相异步电动机在静止坐标系下的数学模型。

Three-phase Asynchronous Motor;Digital Signal Processor;Intelligent Power Module;Vector Control;Space Vector Pulse Width Modulation

三相异步电动机；数字信号处理器；智能功率模块；矢量控制；电压空间矢量脉宽调制

This paper designs and develops information filtering system based on SVM. On the basis of information filtering model based on SVM, According to layered, modular method, this paper designs and develops information filtering system; The system uses three-layer filtering strategy, including packet intercepted model、SVM training model、filtering model、feedback learning model and so on; The system uses SPI technology to intercept packet, vector space module to express text, SVM method to learn training set to construct user profile and feedback incremental learning algorithm to optimize the user profile.

在研究基于SVM的网络信息过滤模型的基础上，按照分层、模块化设计的思路，设计并实现了基于SVM的网络信息过滤系统；该系统实现了三级过滤机制，主要包括数据包截获及协议分析、SVM训练、系统过滤、反馈学习等模块；该系统采用SPI技术实现数据包的截获及重组，采用向量空间模型进行文本表示，利用SVM方法对训练样本进行学习，生成用户模板，利用基于SVM的反馈增量学习算法来进一步调整优化用户模板。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。