Measurement of radioactivity in the environment - Air: radon 222 - Part 13: Determination of the diffusion coefficient in waterproof materials: membrane two-side activity concentration test method (ISO/TS 11665-13:2017)
环境中放射性的测量空气:氡222第13部分:防水材料中扩散系数的测定膜双面活性浓度试验方法(ISO/TS 11665-13-2017)