GB/T 4835.1-2012
辐射防护仪器 β、X和γ辐射周围和/或定向剂量当量(率)仪和/或监测仪 第1部分:便携式工作场所和环境测量仪与监测仪
Radiation protection instrumentation.Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta,X and gamma radiation.Part 1:Portable workplace and environmental meters and monitors
GBT4835.1-2012, GB4835.1-2012