几何元素

词组短语

geometrical element

与几何元素相关的网络例句 [注：此内容来源于网络，仅供参考]

As basic element of CAGD, representation, design, display, analysis and handle of curve and surface is main task of CAGD.

作为CAGD系统基本几何元素，自由曲线、曲面的表示、设计、显示、分析以及规格、处理(包括数据结构、数据库、图形的信息形式和调整方式等)问题，是计算机辅助几何设计的主要研究对象和内容。

D projective collineation provides an ideal mathematical tool for describing planar element correspondence in multiple views.

摘要在描述多视图的几何元素对应关系方面，2-D射影变换是一种有力工具。

A method which can directly compute the bearing capacity of the section according to parameter equation by Green Formula is put forward. bridge ; bearing capacity of normal section ; curvilinear integral

鉴于以上的缺点，本文提出一种用格林公式根据几何元素的参数方程直接计算截面承载能力的方法。1 桥梁正截面极限承载能力计算理论如图 1所示的空心板截面有一个外环和

At the same time, according to the CMM operational principle and the direction cosine of geometric elements, a thought of using direction cosine to analyze the oversize geometric tolerance reasons was proposed and its relevant example was shown, which can expand the way of quality analyses and guide to produce eligible machine parts.

同时在描述三坐标测量机工作原理和几何元素方向余弦的基础上，提出了利用方向余弦进行形位公差超差原因分析的总体思路，并辅以实例，这一办法拓宽了产品质量分析手段，有助于指导制造出合格的机械零部件。

Based on the description of three-COMERO operational principle and the direction cosine of geometric element, a thought that uses direction cosine to analyze reasons of oversize geometric tolerance is advanced and relevant example is showed, which can expand the way of analyzing quality and direct to produce an eligible machine part.

在描述三坐标测量机工作原理和几何元素方向余弦的基础上，提出了利用方向余弦进行形位公差超差原因分析的总体思路，并辅以实例，拓宽了产品质量分析手段，有助于指导制造出合格的机械零部件。

Although detail removal can be carried out in the process of filleting operation and its inverse operation, entities such as vertices, edges and faces with which the simplification operations handle directly lack engineering features, so that the simplification fails to satisfy all the needs of engineering applications.

通过"弧化-还原"，虽然可以实现几何形体的简化，但是这种几何简化是在点、线和面低层次的几何元素上进行的，几何简化的工程意义不明显，难以保证实际应用中的分析几何模型简化的有效性。

Space curve is one of the basic elements in geometric modeling, and its effective representation is the basis of modeling. Parametric representation based on features is a kind of high-level representation including semantic information. In Chapter 4, para- metric representations based on features for free form space curve are investigated, and a parametric model for the loop of plain knitted fabric is established, in which 5 parameters with practical meanings are used to represent the shape of a loop and the relationship between loops. A new shrinkage prediction method for knitted fabric are proposed based on the parametric representation and energy minimizing. Experimental results on some plain knitted fabrics illustrate the feasibility of the proposed method.

空间曲线是造型中最基本的几何元素之一，对其有效的表示是造型的基础，而特征参数化表示是其中一种包含语义信息的高层次表示，本文对空间自由曲线的特征参数化表示进行研究，建立了一种针织物线圈的特征参数化几何模型，采用5个具有实际意义的参数表示织物线圈的几何形状及线圈之间的位置关系，并将该模型与能量极小化的方法相结合，得到了一种能较好地预测针织物缩水率的新模型，对随机选取的一些针织布缩水预测实验表明了算法的可行性。

The line pencil equation for geometric elements in En is studied. From the direction number in the equation, the relative position between the elements and the projective space anp that between any two elements are analyzed.

本文系统地研究了E~n中几何元素的线束方程，由方程中的方向数分析几何元素对投影空间的相对位置和几何元素间的相对位置，规律性强。

Based on the limitations of OBB, this thesis proposes an optimizing overlap test algorithm of bounding box and primitive. This method eliminates the bounding boxes of leaf nodes and streamlines the OBB hierarchical layer. This method also introduces a separating axis theory in the overlapping test between the primitives in order to accelerate the velocity.

针对基于OBB碰撞检测算法存在的缺陷，研究利用包围盒与基本几何元素相交测试的优化方法，消除叶子结点包围盒，精简OBB层次结构；同时在基本几何元素相交测试中引入类似分离轴的方法，加快检测速度。

To manage this socalled element thematic it was necessary to attach thematic attributes to all geometry elements.

包括所有几何元素的专题属性，管理这个所谓的元素属性是必须的。

与几何元素相关的网络解释 [注：此内容来源于网络，仅供参考]

control：控制

通过孤立来排除 AutoGEM 控制 (IEAC)AutoGEM > "控制"(Control)在可能出现奇点的区域中选取几何之后,与使用 IEAC 定义的几何参照存在接触的元素的应力和可能位移会被忽略.

datum：基准

利用"用户界面"(User Interface)、"基准"(Datum)和"几何"(Geometry)选项卡可进一步向这些元素分配系统颜色. 指定几何或基准图元所使用的颜色在"图形"(Graphics)选项卡下单击"混合背景"(Blended Background)复选框,

distance matrix：距离矩阵

另一种针对结构问题特点的方法是距离矩阵(Distance matrix)方法,该方法借助于图形学技术找出三维结构中非常接近的原子,比较两个结构的几何关系. 距离矩阵中每个元素代表Ca之间的距离. 下面介绍一种基于几何哈希(geometric hashing)技术的三维结构数据库搜索方法.

element of finite order：有限阶元素

接触元素 element of contact | 有限阶元素 element of finite order | 几何元素 element of geometry

geometric sum：几何和

geometric simplex 几何单形 | geometric sum 几何和 | geometrical element 几何元素

geometrical element：几何元素

geometric sum 几何和 | geometrical element 几何元素 | geometrical locus 几何轨迹

geometrical locus：几何轨迹

geometrical element 几何元素 | geometrical locus 几何轨迹 | geometrical optics 几何光学

geometric hashing：几何哈希

另一种针对结构问题特点的方法是距离矩阵(Distance matrix)方法,该方法借助于图形学技术找出三维结构中非常接近的原子,比较两个结构的几何关系. 距离矩阵中每个元素代表Ca之间的距离. 下面介绍一种基于几何哈希(geometric hashing)技术的三维结构数据库搜索方法.

reft：参考温度

5-4 几何参数元素几何参数(real constants)主要於有限元素法中用元素几何参数(Real Constants)主要於有限元素法中用ANSYS提供超过40种材料模型(Material Models)可供模以结构(Structural)领域的线弹性材料(Linear Elastic Materials)若为正交(Orthotropic)性材料,则需输入三个方向的弹性系数数(ALPX, ALPY, ALPZ)、参考温度

DITT：在当前工作空间中生成影象

一、图解: DETAIL | * DITT 在当前工作空间中生成影象. | * COPY: 在当前工作空间中拷贝详图的几何元素.