VDE 0468-721-2-4-2016 Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature (IEC 104/646/CD:2015)
Klassifizierung von Umgebungsbedingungen - Teil 2-4: Natuerliche Umgebungsbedingungen - Sonnenstrahlung und Temperatur (IEC 104/646/CD:2015)
Classification of environmental conditions - Part 2-4: Environmental conditions appearing in nature - Solar radiation and temperature (IEC 104/646/CD:2015) 是非强制性国家标准,您可以免费下载前三页