Norm-Entwurf
PR NF E51-006-4
; PR NF ISO 13347-4
PR NF E51-006-4
; PR NF ISO 13347-4
Industrial fans - Determination of fan sound power level under standardized laboratory conditions - Part 4 : sound intensity method.
Titel (englisch)
Industrial fans - Determination of fan sound power level under standardized laboratory conditions - Part 4 : sound intensity method.
