Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 11: EC-cores for use in power supply applications (IEC 63093-11:2018); German version EN IEC 63093-11:2018
铁氧体磁芯.表面不规则性的尺寸和极限指南.第11部分:电源用EC磁芯(IEC 63093-11-2018);德文版EN IEC 63093-11:2018