IEC 61631:2020 磁性氧化物磁芯机械强度的测试方法 Test method for the mechanical strength of cores made of magnetic oxides 标准号：IEC 61631:2020 发布日期：2020-05-07
IEC 61631:2020
IEC 61631:2020 磁性氧化物磁芯机械强度的测试方法 Test method for the mechanical strength of cores made of magnetic oxides 标准号：IEC 61631:2020 发布日期：2020-05-07
IEC 61631:2020