Draft Document - Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 1: Basic rules (IEC 3/1439/CD:2019); Text in German and English
文件草案——工业系统、装置和设备及工业产品——结构原则和参考名称——第1部分:基本规则(IEC 3/1439/CD:2019);德语和英语文本