IEC 61987-21:2015
工业过程测量和控制 - 过程设备目录中的数据结构和要素第21部分:电子数据交换自动阀的特性列表(通用结构)
Industrial-process measurement and control - Data structures and elements in process equipment catalogues - Part 21: List of Properties (LOP) of automated valves for electronic data exchange - Generic