Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Part 1: Basic rules (IEC 81346-1:2009); German version EN 81346-1:2009
工业系统、装置、设备和工业产品.结构原理和参考名称.第1部分:基本规则(IEC 81346-1-2009);德文版EN 81346-1:2009