Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 7: Assessment of degree of chalking by velvet method (ISO 4628-7:2003)
色漆和清漆涂层降解的评定缺陷数量和大小以及外观均匀变化强度的指定第7部分:用天鹅绒法评定粉化程度