DIN EN ISO 25178-3 E:2010
产品几何规格 (GPS) 表面纹理:面积 第3部分:规格运算符 (ISO/DIS 25178-3.2:2009) 草案
Draft Document - Geometrical product specifications (GPS) - Surface texture: Areal - Part 3: Specification operators (ISO/DIS 25178-3.2:2009); German version prEN ISO 25178-3:2009