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2部分:应急辐射防护用便携式高量程β和光子剂量与剂量率仪
Radiation protection instrumentation - Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta, X and gamma radiation - Part 2: High range beta and photon dose and dose rate portable instruments for emergency radiation protection purposes