ONORM EN ISO 389-7:2017现行
Acoustics - Reference Zero For The Calibration Of Audiometric Equipment - Part 7: Reference Threshold Of Hearing Under Free-Field And Diffuse-Field Listening Conditions (Iso 389-7:2005 + Amd.1:2016)
出版：Osterreichisches Normungsinstitut
专家解读视频
2017 [15/03/2017]2006 [01/04/2006]1998 [01/08/1998]
NS EN ISO 389-7:1998 - Identical
SN EN ISO 389-7:2006 - Identical
NEN EN ISO 389-7:2006 - Identical
NF EN ISO 389-7:2006 - Identical
NBN EN ISO 389-7:2006 - Identical
I.S. EN ISO 389-7:2005 - Identical
SS EN ISO 389-7 Ed. 2 (2005) - Identical
EN ISO 389-7:2005 - Identical
UNE EN ISO 389-7:2006 - Identical
DIN EN ISO 389-7 (2017-01) - Identical
UNI EN ISO 389-7:2016 - Identical
BS EN ISO 389-7:2005+A1:2016 - Identical
