DIN EN 60519-21 (2009-09)现行
Safety In Electroheat Installations - Part 21: Particular Requirements For Resistance Heating Equipment - Heating And Melting Glass Equipment
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
2009 [01/09/2009]1998 [01/10/1998]
Supersedes DIN IEC 60519-21. (10/2009)
SS EN 60519-21 Ed. 2 (2009) - Identical
NF EN 60519-21:2009 - Identical
UNE EN 60519-21:2009 - Identical
BS EN 60519-21:2009 - Identical
NBN EN 60519-21:2009 - Identical
