DIN EN ISO 21546 E:2020 文件草案 油漆和清漆 使用線性磨損測試儀(摩擦磨損測試儀)測定耐磨性(ISO 21546:2019) 德文版和英文版 prEN ISO 21546:2020
Draft Document - Paints and varnishes - Determination of the resistance to rubbing using a linear abrasion tester (crockmeter) (ISO 21546:2019); German and English version prEN ISO 21546:2020