VDE 0468-721-2-7-2017 Classification of environmental conditions - Part 2-7: Environmental conditions appearing in nature - Fauna and flora (IEC 104/741/CDV:2017); German version prEN 60721-2-7:2017
Klassifizierung von Umgebungsbedingungen - Teil 2-7: Natuerliche Umgebungsbedingungen - Fauna und Flora (IEC 104/741/CDV:2017); Deutsche Fassung prEN 60721-2-7:2017
Classification of environmental conditions - Part 2-7: Environmental conditions appearing in nature - Fauna and flora (IEC 104/741/CDV:2017); German version prEN 60721-2-7:2017 是非强制性国家标准,您可以免费下载前三页