产品几何量技术规范(GPS).特征与条件.定义

[中文适用范围]： 本国际标准定义了几何规范、特征和条件的一般术语。这些定义基于 ISO 17450-1 和 ISO 22432 中开发的概念，并使用基于 ISO 17450-1:2011 附件 B 的数学描述给出。本国际标准并非供工业设计师使用，而是旨在作为“路线图”，规划基于几何特征的要求，从而以一致的方式为行业和软件制造商实现未来的标准化。本国际标准定义了可用于 GPS 的一般类型的几何特征和条件。这些描述适用于 - 工件， - 组件， - 工件群，以及 - 组件群。这些定义基于 ISO 17450-1 和 ISO/TS 17450-2 中包含的运算符概念和对偶原理以及 ISO 22432 中定义的几何特征类型的描述。从概念上讲，这些规范运算符可以用作规范运算符或验证运算符（对偶原理）。本国际标准不旨在定义 GPS 规范、符号或其他类型的表达。 [外文原描述]： ISO 25378:2011 defines general terms for geometrical specifications, characteristics and conditions. These definitions are based on concepts developed in ISO 17450-1 and ISO 22432 and they are given by using a mathematical description based on Annex B of ISO 17450-1:2011. ISO 25378:2011 is not intended for industrial use as such among designers, but is aimed to serve as the "road map" mapping out the requirements based on geometrical features, thus enabling future standardization for industry and software makers in a consistent manner. ISO 25378:2011 defines general types of geometrical characteristics and conditions which can be used in GPS. These descriptions are applicable to a workpiece, an assembly, a population of workpieces, and a population of assemblies. These definitions are based on concepts of operators and the duality principle contained in ISO 17450-1 and ISO/TS 17450-2 and on the description of types of geometrical features defined in ISO 22432. Conceptually, these specification operators can be used as specification operators or as verification operators (duality principle). ISO 25378:2011 is not intended to define GPS specifications, symbology or other types of expression.