NEN EN ISO 389-2:1996现行
Acoustics - Reference Zero For The Calibration Of Audiometric Equipment - Part 2: Reference Equivalent Threshold Sound Pressure Levels For Pure Tones And Insert Earphones
出版：Nederlands Normalisatie Instituut
专家解读视频
1996 [01/10/1996]
UNE EN ISO 389-2:1997 - Identical
SS EN ISO 389-2 Ed. 1 (1996) - Identical
UNI EN ISO 389-2:1997 - Identical
SN EN ISO 389-2:1997 - Identical
BS EN ISO 389-2:1997 - Identical
DIN EN ISO 389-2 (1996-10) - Identical
ONORM EN ISO 389-2:1997 - Identical
NBN EN ISO 389-2:1996 - Identical
I.S. EN ISO 389-2:1997 - Identical
NF EN ISO 389-2:1996 - Identical
NS EN ISO 389-2 Ed. 1 (1996) - Identical
ISO 389-2:1994 - Identical
