Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 5: General properties of radon and radon decay products and their measurement methods (IEC TR 61577-5:2019)
辐射防护仪器.氡和氡衰变产物测量仪器.第5部分:氡和氡衰变产物的一般特性及其测量方法(IEC TR 61577-5-2019)