ISO 389-2:1994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：International Organization for Standardization
专家解读视频
NS EN ISO 389-2 Ed. 1 (1996) - Identical
PN EN ISO 389-2:2002 - Identical
UNE EN ISO 389-2:1997 - Identical
KS I ISO 389-2:2014 - Identical
SN EN ISO 389-2:1997 - Identical
NEN EN ISO 389-2:1996 - Identical
AS ISO 389.2-2007 - Identical
SS EN ISO 389-2 Ed. 1 (1996) - Identical
SS ISO 389-2 Ed. 1 (1995) - Identical
BS EN ISO 389-2:1997 - Identical
DIN EN ISO 389-2 (1996-10) - Identical
BS ISO 389-2:1994 - 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
UNI EN ISO 389-2:1997 - Identical
