GB/T 3658-2022软磁金属材料和粉末冶金材料20Hz~100kHz频率范围磁性能的环形试样测量方法国家标准
英文:Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies i...
英文:Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies i...