Home / Standards / SJ/T 1766-1997 SJ/T 1766-1997 Abolished 软磁铁氧体材料分类 Standard Type SJ ICS N/A CCS N/A Status Abolished Issue Date 1997-09-02 Implementation 1998-01-01 Centralized Committee 电子工业部 Issuing Authority 电子工业部