DIN EN 61987-21 (2014-11)被替代
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 - General Structures (iec 65b/926/cdv:2014)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
