Industrial automation systems and integration—Product data representation and exchange—Part 42:Integrated generic resource:Geometric and topological representation
IDT ISO 10303-42:2003;ISO 10303-42:2003/Cor.1:2007
全国自动化系统与集成标准化技术委员会(SAC/TC 159)
GB/T 16656的本部分规定了用于产品形状的显式几何与拓扑表达的资源结构，其范围由一个理想产品模型显式表示的需要所确定，但不包括用特征来表示的公差和几何隐式表达形式。第4章中的几何与第5章中的拓扑都可以独立应用，且亦广泛地用于第6章的几何形状模型的各种形状描述。此外，本部分还规定了表示几何元素概念的范围。
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