GB/T 4957-2003
AbolishedNon-conductive coatings on non-magnetic basis metals--Measurement of coating thickness--Eddy current
非磁性基体金属上非导电覆盖层 覆盖层厚度测量 涡流法
📚 References & Relations / 引用与关联
normative_reference
GB/T 4956
normative_reference
ISO 2178