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.
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.
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.
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.
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.
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