Industrial automation systems and integration—Parts library—Part 101:Geometrical view exchange protocol by parametric program
IDT ISO 13584-101:2003
全国工业自动化系统与集成技术委员会(SAC/TC 159)
GB/T 17645的本部分规定了basic_geometry（基本几何）的表达类别。这种表达类别规定了零件形状的一般概念。它可以与零件库中定义的任何项关联。
本部分还定义了怎样通过符合GB/T 17645.31 的FORTRAN程序，在库交换语境中交换属于本表达类别的表达。
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