VDE 0493-1-6661-2013 Measurement of the radioactivity in the environment - Air: Radon-222 - Part 11: Test method for soil gas with sampling at depth (ISO/CD 11665-11:2013)
Ermittlung der Radioaktivitaet in der Umwelt - Luft: Radon-222 - Teil 11: Verfahren zur Probenahme und Pruefung von Bodenluft (ISO/CD 11665-11:2013)
Measurement of the radioactivity in the environment - Air: Radon-222 - Part 11: Test method for soil gas with sampling at depth (ISO/CD 11665-11:2013) 是非强制性国家标准,您可以免费下载前三页