GB/T 4957-2003 Non-conductive coatings on non-magnetic basis metals. Measurement of coating thickness. Eddy current
GB/T 4957-2003非磁性基体金属上非导电覆盖层 覆盖层厚度测量 涡流法
样品要求：至少50×50mm, 3 pcs
周期：7~9工作日
GB/T 4957-2003 Non-conductive coatings on non-magnetic basis metals. Measurement of coating thickness. Eddy current
GB/T 4957-2003非磁性基体金属上非导电覆盖层 覆盖层厚度测量 涡流法
样品要求：至少50×50mm, 3 pcs
周期：7~9工作日