Electrical insulating materials - Determination of the effects of ionizing radiation - Part 4: Classification system for service in radiation environments (IEC 60544-4:2003); German version EN 60544-4:2003
电绝缘材料.电离辐射影响的测定.第4部分:辐射环境中使用的分类系统(IEC 60544-4-2003);德文版EN 60544-4:2003