Geometrical product specifications (GPS) - Straightness - Part 1: Vocabulary and parameters of straightness (ISO/TS 12780-1:2003); German version CEN ISO/TS 12780-1:2007
产品几何技术规范(GPS).直线度.第1部分:直线度的词汇和参数(ISO/TS 12780-1-2003);德国版CEN ISO/TS 12780-1:2007