将实体几何连续性应用于快速分层，可以降低内存，加快信息提取时间。
Applying geometry continuity of entity to Rapid Slicing may lower the Inside and reduce time of withdrawing information.
提出了实体几何缺席推理理论，研究了相应的三维实体重构算法，并进行了实例验证。
A new theory called default geometric reasoning is put forward, and the corresponding solid reconstruction algorithm is studied.
采用特征对象化的设计思想，在特征造型和3维实体几何造型的基础上，研究液压集成块的3维参数化设计方法。
On the basis of Feature Modeling and 3d Solid Geometry Modeling, with the idea of Object-Oriented Product Design, a 3d Parametric Feature Modeling Method is applied to develop manifold.
根据结构实体几何法（CSG）建模思想，采用层次化、结构化的建模方法，构建了机床本体（包括刀具）模型；
On the basis of the idea of CSG modeling method, the hierarchical structural modeling method was adopted to construct machine(including tool)model.
本文在对数字城市的研究体系和三维城市模型进行分析的基础上，着重对数字城市建筑物的构造实体几何(CSG)建模方法进行了研究。
On the basis of analysis of digital city research framework and existing 3d urban model, this paper researches mainly the techniques of building model based on CSG in digital city.
人用眼睛观察电脑屏幕上互相影响的几何图形的实验得出的结论是：他们表现出带有道德意图的实体存在。
Subjects watching geometric shapes with eye spots interacting on a computer screen conclude that they represent agents with moral intentions.
雕塑实体模型通过裁剪曲面片和半边数据结构来表达几何和拓扑信息。
The topology and geometry of solid is represented by trimmed curve surface and half-edge data structure.
闭路拓扑原理和欧拉公式是检验实体模型边界表示的拓扑与几何一致性的重要工具。
For inspecting topological and geometrical unanimity of a solid model, principle of closed path topology and Euler′s formula are important tools.
此时，三维实体的“边界”是指“边界表面网格”，它既具有几何性质，又具有拓扑性质。
Here the three dimensional entity boundary is boundary surface mesh, which owns not only geometric property but also topology property.
所谓特征识别便非自产品的实体模型动身自动识别出其外具无一订工程意义的几何形状――便特征，入而地出产品的特征模型。
The feature recognition is the process in which geometric form with a certain engineering significance is extracted automatically from solid model, and then feature model is produced.
基于实体造型，综合现有NC几何验证方法的优点，研究与实现了一种新的Z&N验证算法。
Based on solid model and general geometry validity for NC, the paper carries out a new Z & W algorithm.
本文描述了一个将曲面造型和实体造型技术统一起来的试验性几何造型系统。
This paper is concerned with a geometric modelling system that integrates surface modelling with solid modelling.
该方法中的被剪切对象是较为复杂的几何实体，包括圆弧以及带有圆弧边界和带有洞的复杂多边形对象，其中剪裁窗口可以为凹多边形或凸多边形。
The cutting object is complicacy geometry entity, which is complicacy polygon with arc, arc boundary and hole, the cutting window can be cave or convex polygon.
为了与工程实际相符合，本文采用三维实体建模，几何尺寸与工程实际相符；
Three-dimensional solid modeling method is introduced in this paper for good result, and the geometrical size of the model is consistent to the true value.
根据几何建模原理以及实体造型技术，从结构和功能上进行了结构建模的构架。
According to the principles of geometry modeling and solid molding techniques, the structural modeling is established by the aspects of structure and function.
本文结合交通部公路交通工程综合试验场的实体工程，介绍了高速环道的几何设计技术。
This paper presents the principle and method of the geometry design of highspeed test loop integrated with the Test Field of MOC. for Highway and Traffic Engineering.
面向对象的地理信息模型以地理空间实体为对象，地理实体可以从几何数据、符号数据、实体数据、属性数据的角度来进行数据的组织。
A geo-spatial entity which can be organized from geometric data, symbol data, entity data, attribute data is regarded as an object to the object oriented geographical information model.
特征技术是三维几何建模领域中继实体模型技术后的又一个重要里程碑。
Features 3d geometric modeling technology is the area of solid model relay technology is another important milestone.
针对图形文件以矢量方式记录几何实体的特点，提出了一种基于改进几何哈希法的图形检索算法。
In view of the fact that geometric entities are recorded in vector form in graphics file, this paper presents an algorithm based on modified geometric hashing for shape retrieval.
ACIS是一种三维几何造型引擎，它集线框、曲面和实体造型于一体，为各种3d造型应用的开发提供了几何造型平台。
ACIS is a prominent 3d modeling engine, which integrating wireframe, surface, and solid modeling in itself, supplies a geometric modeling platform for different 3d modeling applications.
几何层则实现与CAD系统的接口，以提供产品的几何实体描述。
The geometry layer provides an interface with CAD system to describe product.
实体中没有这个命令，壳体中才有。固定几何体和这个命令是一致的。
For solids, you cannot access the Immovable (No translation) option. The Fixed Geometry restraint however is the same as the immovable restraint for solids.
应用实体扩展数据库技术，使特征携带非几何信息；
The feature schleps its information of non-geometry by database-externed technique of the entity.
本文根据双螺杆横截面几何造型方程，运用MDT软件包，实现了同向和异向旋转双螺杆的三维实体造型。
According to the intermeshing mechanisms of co and counter rotating twin screws, the 3D solid modeling of twin screw was realized by using Mechanical Desktop(MDT) of AUTODESK in this paper.
多维标度技术是一种把实体间相似性信息转换成空间几何信息的数据分析技术。
Multidimensional scaling (MDS) is a data analysis technique that transforms proximity information into geometric information.
本文探讨了地理空间要素多尺度表达在几何层次、实体层次、属性层次方面的多尺度表现特征。
The hierarchical characteristics in multi-representations for geographical features were explored, namely multi-geometries hierarchy, multi-entities hierarchy and multi-attributes hierarchy.
主要说明AC IS几何技术是一个面向对象软件技术，它集线框、曲面和实体造型于一体，并允许这3种表示共存于统一的数据结构中。
Targeted at objects this paper introduces ACIS software technology, which combines wireframe model, surface model and solid model. It allows three presentations in the integral system.
讨论了PBOM，工艺模板与3D几何实体三者之间的组织和关联方法。
The organization and correlation among the Process Bill of Materials (PBOM), the process templates and the 3D instances are discussed as well.
讨论了PBOM，工艺模板与3D几何实体三者之间的组织和关联方法。
The organization and correlation among the Process Bill of Materials (PBOM), the process templates and the 3D instances are discussed as well.
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