DIN EN ISO 21968:2018-11 草案 金屬和非金屬基礎材料上的非磁性金屬涂層 涂層厚度測量 相敏渦流法 (ISO/DIS 21968:2018)
Draft Document - Non-magnetic metallic coatings on metallic and non-metallic basis materials - Measurement of coating thickness - Phase-sensitive eddy-current method (ISO/DIS 21968:2018); German and English version prEN ISO 21968:2018