UNE-EN IEC 60404-7:2020
磁性材料 第7部分:开放磁路中磁性材料矫顽力(高达 160kA/m)的测量方法
Magnetic materials - Part 7: Method of measurement of the coercivity (up to 160 kA/m) of magnetic materials in an open magnetic circuit (Endorsed by Asociación Española de Normalización in August of 2020.)