三角关系

Methods:To observe the courser and adjacent relationship of the vascular nerve in gluteal region, vastus lateralis region and deltoid region on 20 infant corpses and 4 fault specimens.

对20具婴幼儿尸体标本和4套幼儿断层标本的臀区、股外侧区和三角肌区的血管神经走行和毗邻关系进行解剖观察，测量各区皮肤、浅筋膜和肌的厚度。

We comprehensively investigate and discuss the relation in the tetragonal,rhombohedral and coexistence phase region of PZT.

我们对PZT四方相区、三角相区和混合相区介电常数与晶格畸变的关系进行了全面研究和探讨。

The triangular mesh is defined by points cloud and topologic relation among the points.

离散三角网格是由离散点云以及点之间的拓扑关系定义的。

This paper discusses some application cases of the error propagation law by the examples of trigonometrical survey, and presents that not only sum function and numeral multipling function in which there is only one independent observed value but also more complex functions which are equal in mathematics are not opposite in the process of error propagation according to the error propagation law.

1引言本文以三角测量为例，对误差传播定律一些应用问题进行了讨论，指出当只有一个独立的观测值时，和函数与倍数函数运用误差传播定律不会出现悖论；如果在测量工作中有多余的直接观测值，就需用平差后的间接观测值按协方差传播律来计算，这样数学中相等的函数关系才能得到同样的函

The solid modeling based on STL dare mesh instead of the one based on surface is created to increase morphological comparability. Topological relationship among polygons is reconstructed to modify and Boolean operation. Periodontal ligament, supporting bone and glass fibers are reasonably predigested and constructed in CAD system to reduce the amount of mesh. FEA meshes are generated through splitting method to improve quality of mesh.

本文以基于STL数据的网格实体建模代替传统的曲面实体建模，提高了模型的几何相似性；重建三角面片间的拓扑关系，便于了模型的更改及布尔运算；牙周组织与纤维的正向设计及其合理简化，降低了工作量，减少了网格数量；基于STL数据拆分法的有限元网格划分，提高了单元质量。

The evolution of the economic region of the Pan-Yangtze river delta has close connection with the Yangtze-river,the Double-Bridge Economic Belt along the New Euro-Asia Continental Bridge at the East of Xi'an city and other important transport beam.

泛长三角经济区空间结构演化与长江、新亚欧大陆桥西安以东双陆桥等重要交通束有紧密关系。

In chapter two, the present status of highway and waterway freight transportation in Yangtze Delta is described, including the main factors, such as transportion tools, traffic infrastructure, freight traffic, and so on.

通过分析经济发展和协调货运交通之间的关系，指出协调发展的公路水路货运交通对经济发展具有不可替代的积极作用。第二章研究长三角公路水路货运发展现状。

The display information is represented by triangles of faces and polylines of edges, organized in the hierarchy of assembly, part, face, line segment and point. Geometry information is appended onto the display information to provide precise definition of geometric elements for inquiry.

显示信息记录面的三角化模型和边的多边形模型，以加快模型的浏览速度，且按装配、零件、面、线、点层次关系进行组织；几何数据附加在显示信息上，提供几何数据的精确查询。

Roof of the building is triangulated and articulated to create an uneven roofscape and this treatment of the roofscape is extended to the landscape of the ground level, establishing multiple relationships between each space and environment.

建筑的顶部采用三角造型，联系在一起形成一条不规则的屋顶线，并延伸到周围的景观设计当中，丰富了每个独立设计空间与周围环境的关系。

The original STL model is progressively reorganized into a structured triangle mesh by using half edge pointers and hash table indexing to linking adjacent triangles. All redundant vertices are eliminated and at the same time the topology of triangle mesh is set up.

首先通过半边匹配确定新增三角片的类型；然后针对每一种类型使用不同的方法去除冗余顶点，并同时建立拓扑关系；最后通过顶点数组紧缩消除顶点空隙，将半边hash表转化为半边数组，完成网格模型的重建。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。