GB/T 9629-1988
AbolishedInductor and transformer cores for telecommunications--Part 4:Blank detail specification--Magnetic oxide cores for transformers and chokes for power applications--Assessment level A
通信用电感器和变压器磁芯 第四部分:空白详细规范 电源变压器和扼流圈用磁性氧化物磁芯 评定水平 A(可供认证用)