本文在分析GIS、CAD以及通用出版软件数据模型的基础上提出了面向地图出版的数据模型，具体包括几何对象模型、地图模型和拓扑模型以及它们的数据库存储方案。
The data model is drive from the analysis of the data model of GIS , CAD and DTP system. It include the geometry model, the map model, the topology model and their database schema.
通过对模型轮廓曲线及表面的几何特性分析，编辑对象，从而达到对设计进行优化的目的。
Through geometrical feature analysis of curve and face of model outline, editing object, thus receiving purpose of optimization design.
以某地铁标段施工的土压平衡盾构机为研究对象，建立了盾构密封舱土压力系统离散元仿真的几何模型；
Taking the shield machine tunneling in a subway section as the research object, the DEM geometrical model for analyzing the chamber pressure of the shield machine is established.
本文采取的考虑对象和特征的数据交换方法实现了TRIBON与CATIA间船体模型几何信息和特征信息的交换。
The data exchange method based on objects and features realized the data exchange, including geometry information and feature information, between TRIBON and CATIA.
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.
以新型采暖方式——低温热水地面辐射采暖为对象，建立了研究的几何模型及数学模型。
A new heating mode-low temperature water radiant floor heating was investigated. Geometriccd and mathematic models were established.
当今的GIS系统的空间数据模型，主要反映地图制图领域的点、线、面对象管理与操作的几何知识。
However, the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography, such as point, line and poly geometry objects.
以几何模型为研究对象，基于三维特征研究多态模型的表示和变迁机理。
Geometry model is regarded as the study object. Representation and variance of multi-state model is studied based on 3d geometry feature.
应用于EX系统的NURBS曲面模型是本文的主要研究对象，EX系统从外部CAD／CAM系统获取曲面模型参数信息，通过IGES文件传递，将参数化曲面模型转化为系统可操作的几何模型。
The surface mesh is used in a GCAD system DressingSim EX. Our research aims at NURBS surface models. The models are transferred from exterior CAD/CAM system to EX system by IGES files.
应用于EX系统的NURBS曲面模型是本文的主要研究对象，EX系统从外部CAD／CAM系统获取曲面模型参数信息，通过IGES文件传递，将参数化曲面模型转化为系统可操作的几何模型。
The surface mesh is used in a GCAD system DressingSim EX. Our research aims at NURBS surface models. The models are transferred from exterior CAD/CAM system to EX system by IGES files.
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