
Rubber And Plastics Hoses And Hose Assemblies - Determination Of Permeability To Gas
出版:Nederlands Normalisatie Instituut

专家解读视频
Defines relevant test signal characteristics, requirements for free, diffuse, and quasi-free sound fields, and procedures for sound field audiometry using pure tones, frequency-modulated tones or other narrow-band test signals presented by means of one or more loudspeakers.
Supersedes NEN ISO 4080. (04/2003)
ONORM EN ISO 4080:2010 - Identical
SN EN ISO 4080:2010 - Identical
DIN EN ISO 4080 (2010-05) - Identical
NS EN ISO 4080:2009 - Identical
NS EN ISO 4080 Ed. 1 (1995) - Identical
UNE EN ISO 4080:1996 - Identical
SS EN ISO 4080 Ed. 1 (1995) - Identical
SN EN ISO 4080:1995 - Identical
ONORM EN ISO 4080:1995 - Identical
NF EN ISO 4080:2010 - Identical
BS EN ISO 4080:2009 - Identical
I.S. EN ISO 4080:2009 - Identical
UNE EN ISO 4080:2010 - Identical
SS EN ISO 4080 Ed. 2 (2009) - Identical
UNI EN ISO 4080:2010 - Identical
NBN EN ISO 4080:2010 - Identical