DIN EN 61331-1:2016 医疗诊断时防X射线辐射的防护器具.第1部分:材料衰减性能的测定(IEC 61331-1-2014).德文版本EN 61331-1-2014
Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials (IEC 61331-1:2014); German version EN 61331-1:2014