ISO 4628-4:2016
涂料和清漆. 涂层老化评估. 缺陷数量和大小以及外观均匀变化程度命名. 第4部分: 开裂程度评定
Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking