色漆和清漆 涂层老化的评价 缺陷的数量和大小以及外观均匀变化程度的标识 第6部分:胶带法评定粉化等级
Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 6: Assessment of degree of chalking by tape method