ISO 4869-1:2018现行
Acoustics -- Hearing protectors -- Part 1: Subjective method for the measurement of sound attenuation
出版：International Organization for Standardization
专家解读视频
This document specifies a subjective method for measuring sound attenuation of hearing protectors at the threshold of hearing.
DIN EN ISO 4869-1 E:2019 - Identical
PN-EN ISO 4869-1:2018-12 - Identical
NS-EN ISO 4869-1:2018 - Identical
EN 24869-1 : 1992 - Identical
SN EN ISO 4869-1:2019 - Identical
BS EN ISO 4869-1:2018 - Identical
NF EN ISO 4869-1:2018 - Identical
DS / EN ISO 4869-1: 2018 - Identical
?NORM EN ISO 4869-1: 2019 05 01 - Identical
SS-EN ISO 4869-1:2018 - Identical
UNI EN ISO 4869-1:2019 - Identical
I.S. EN ISO 4869-1:2018 - Identical
NEN-EN-ISO 4869-1:2018 en - Identical
DIN EN ISO 4869-1 E:2019 - Identical
UNI EN ISO 4869-1:2019 - Identical
NEN-EN-ISO 4869-1:2018 en - Identical
BS EN ISO 4869-1:2018 - Identical
NS-EN ISO 4869-1:2018 - Identical
I.S. EN ISO 4869-1:2018 - Identical
NF EN ISO 4869-1:2018 - Identical
SS-EN ISO 4869-1:2018 - Identical
DS / EN ISO 4869-1: 2018 - Identical
PN-EN ISO 4869-1:2018-12 - Identical
SN EN ISO 4869-1:2019 - Identical
