VDE 0493-1-6659-2016 Measurement of radioactivity in the environment - Air: Radon-222 - Part 9: Test methods for exhalation rate of building materials (ISO 11665-9:2016)
Ermittlung der Radioaktivitaet in der Umwelt - Luft: Radon-222 - Teil 9: Verfahren zur Bestimmung der Exhalationsrate aus Baumaterialien (ISO 11665-9:2016)
Measurement of radioactivity in the environment - Air: Radon-222 - Part 9: Test methods for exhalation rate of building materials (ISO 11665-9:2016) 是非强制性国家标准,您可以免费下载前三页