表层剥蚀 meaning in Chinese

superficial degradation

Paints and varnishes . evaluation of degradation of paintcoatings . designation of intensity , quantity and size of common types of defect . part 4 : designation of degree of cracking
涂料和清漆.涂料表层剥蚀评定.常见缺陷的尺寸数量和程度的名称.第4部分：裂度名称
Paints and varnishes . evaluation of degradation of paint coatings . designation of intensity , quantity and size of common types of defect . part 5 : designation od degree of flaking
涂料和清漆.涂料表层剥蚀评定.常见缺陷类型的尺寸数量和程度的名称.第5部分：剥落度名称