DIN EN ISO 12780-1:2014 产品几何技术规范(GPS).平直度.第1部分:平直度的词汇和参数(ISO 12780-1-2011).德文版本EN ISO 12780-1-2011
Geometrical product specifications (GPS) - Straightness - Part 1: Vocabulary and parameters of straightness (ISO 12780-1:2011); German version EN ISO 12780-1:2011