Draft Document - Radiation protection instrumentation - Equipment for measuring specific activity of gamma-emitting radionuclides in foodstuffs (IEC 61563:2019); German version prEN IEC 61563:2020
文件草案-辐射防护仪器-测量食品中γ辐射放射性核素比活度的设备(IEC 61563-2019);德国版本prEN IEC 61563:2020