查询词典 mesh

Parameterizing a 3D mesh means finding an isomorphic mapping between a discrete surface patch and a planar mesh.

三角网格的参数化是指从空间三角网格到参数区域的一个同构映射，参数区域的选择可以是平面区域、球面等。

Boundary polynomial point interpolation mesh-free method and boundary radial point interpolation mesh-free method were presented, based on polynomial basis and radial basis respectively for transient eddy current analysis, and their interpolation shape functions satisfy the Kronecker delta function and the essential boundary conditions can be directly imposed on the boundary nodes. An example on analyzing transient eddy current of a square metal column was set to prove the validity of the proposed methods, and a comparison on accuracy between BPPIM and BRPIM was analyzed as well.

运用多项式点插值法和径向基点插值法构造形函数，推导了适合于工程电磁场瞬态涡流问题的多项式基点插值边界无单元方法和径向基点播值边界无单元方法，这两种方法的空间插值形函数满足Kronecker delta条件，从而强加边界条件可以直接施加在边界点上，以金属长方柱的瞬态涡流分析作为数值算例，证实了两种方法的正确性和有效性，并对两种基类的点插值法进行了精度分析和比较。

If you are thinking about using a cage with wire mesh, you should compare the size of the hole in the mesh with the size of your bird's head before you make your selection.

如果您想使用笼网，您应该比较大小的洞，在网格的大小与你的鸟的头前，会让您的选择。

This method uses the new mesh to control the monstrosity of mesh and make the calculation of transportation easier.

该方法的引入使得三维流体计算中对于网格的处理以及程序的编制都大大简化。

In the geometry compression approaches presented in this thesis, the representation of a polygonal mesh is divided into two parts: the first part is termed topology information, which refers to the connectivity of the vertices in the mesh; the second part is termed as geometry information, which refers to the vertex locations and other attributes including color, normal, texture coordinates etc.

在本文中，一个多边形网格的数据表示为两部分：第一部分叫做拓扑信息，指多边形网格顶点之间的连接关系；第二部分叫做几何信息，指多边形网格坐标、颜色、法向以及纹理坐标等几何属性。

In the geometry compression approaches presented in this thesis, the representation of a polygonal mesh is divided into two parts: namely the topology information, which refers to the connectivity of the vertices in the mesh; and the geometry information, which refers to the vertex locations and other attributes including color, normal, texture coordinates etc.

在本文中，一个多边形网格的数据被分割为两部分：第一部分叫做拓扑信息，指多边形网格顶点之间的连接关系；第二部分叫做几何信息，指多边形网格坐标、颜色、法向以及纹理坐标等几何属性。

Firstly,3D point clouds produced by 3D laser scanner are converted into polygon mesh.Then,normal vectors and areas of every polygon mesh are computed and some candidate regions are obtained using region dilation strategy.Finally,the 3D laser scanning data is segmented into regions of similar orientation after the elimination of the insignificant regions.

首先将三维扫描表面数据转化为三维网格模型；然后利用同一区域中相邻网格具有相似法线方向这一性质，使用区域膨胀策略生成若干获选表面区域；最后通过去除候选区域中的噪声区域得到最终表面区域分割结果。

In order to implement Boolean operations on open or closed mesh models with different complexities correctly,a new algorithm for 3D mesh model by using Boolean operations is presented,which is based on the orientability of manifold meshes and the topological relationship of the meshes.

为了快速正确地对各种复杂程度的网格模型进行空间布尔运算，根据复式网格的可定向性建立各元素间的拓扑关系，并根据这些拓扑关系判断网格面片的最终去舍，得到布尔运算结果。

This paper mainly discusses the overset mesh pre-processing technology, and supplies a new efficient and robust hole-cutting algorithm applied in the overset mesh preprocessing, which is based on maze algorithm and can be easily implemented with low complexity.

本文主要讨论重叠网格预处理方法，并提出迷路算法应用于"挖洞"过程，为重叠网格预处理提供了高效、可靠的"挖洞"方法，算法复杂度低，实现简单，健壮性好；在多层次嵌套重叠方面，引入了重叠网格主从关系图有效解决多层次嵌套重叠带来的问题；在提高找重效率方面，建立基于网格的kd树加快了找重过程。

Using hybrid CSG/Brep representation, the whole solid model is a CSG tree made of leaf nodes with basic Brep, which include triangular mesh, subdivision surface control mesh and basic geometries with parametric representation.

该方法采用混合CSG/Brep表示，实体模型在整体上用CSG树表示，整个模型为基本边界表示的叶节点的组合，叶结点可以是三角网格、细分曲面控制网格或参数表示的基本几何体。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。