ISO 11665-4:2012 环境中放射性的测量——空气:氡-222第4部分:使用被动采样和延迟分析测定平均放射性浓度的综合测量方法
Measurement of radioactivity in the environment — Air: radon-222 — Part 4: Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis