VDE 0468-721-2-1-2015 Classification of environmental conditions - Part 2-1: Environmental conditions appearing in nature - Temperature and Humidity (IEC 60721-2-1:2013); German version EN 60721-2-1:2014
Klassifizierung von Umgebungsbedingungen - Teil 2-1: Natuerliche Umgebungsbedingungen - Temperatur und Luftfeuchte (IEC 60721-2-1:2013); Deutsche Fassung EN 60721-2-1:2014
Classification of environmental conditions - Part 2-1: Environmental conditions appearing in nature - Temperature and Humidity (IEC 60721-2-1:2013); German version EN 60721-2-1:2014 是非强制性国家标准,您可以免费下载前三页