ICS25220.40A29中华人民共和国国家标准GB/T4957-2003/ISO2360:1982代替GB/T4957-1985非磁性基体金属上非导电覆盖层覆盖层厚度测量涡流法Non-conductivecoatingsonnon-magneticbasismetals-Measurementofcoatingthickness-Eddycurrent(ISO2360:1982,IDT)zfx...