国产精品久久久在线观看_亚洲免费观看视频网站_国产盗摄视频一区二区三区_久久久国产一级 - 日本在线观看一区

歡迎來到寰標網！ 客服QQ：772084082 加入會員
已選條件： 噪聲(與人有關的)
每頁顯示20 條，共找到 942 條結果 <1/48>
標準編號 標準名稱 發(fā)布部門 發(fā)布日期 狀態(tài)
AS ISO 389.1-2007 Acoustics - Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones Standards .. 2020-01-30 現行
I.S. EN ISO 389-1:2018 Acoustics - Reference Zero for the Calibration of Audiometric Equipment Part 1: Reference Equivalent Threshold Sound Pressure Levels for Pure Tones and Supra-aural Earphones (iso 389-1:2017) National S.. 2018-03-04 現行
ISO 389-1:2017 Acoustics - Reference zero for the calibration of audiometric equipment Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones Internatio.. 2017-12-13 現行
KS C IEC 61252:2017 Electroacoustics — Specifications for personal sound exposure meters Korean Sta.. 2017-08-29 廢止
ISO 1996-2:2017 Acoustics - Description, measurement and assessment of environmental noise Part 2: Determination of sound pressure levels Internatio.. 2017-07-14 現行
IEC 61252 Amd.2 Ed. 1.0 Amendment 2 - Electroacoustics - Specifications for personal sound exposure meters Internatio.. 2017-04-10 現行
IEC 61252 Ed. 1.2 Electroacoustics - Specifications for personal sound exposure meters Internatio.. 2017-04-06 現行
I.S. EN ISO 7029:2017 Acoustics - Statistical Distribution of Hearing Thresholds Related to age and Gender (iso 7029:2017) National S.. 2017-02-12 現行
ISO 7029:2017 Acoustics - Statistical distribution of hearing thresholds related to age and gender Internatio.. 2017-01-09 現行
DIN EN ISO 389-7 (2017-01) 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) German Ins.. 2017-01-01 現行
ISO 389-7:2005/Amd 1:2016 Acoustics - Reference zero for the calibration of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions - Amendment 1: Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions Internatio.. 2016-07-12 現行
DIN EN ISO 389-3 (2016-06) Acoustics - Reference Zero For The Calibration Of Audiometric Equipment - Part 3: Reference Equivalent Threshold Force Levels For Pure Tones And Bone Vibrators (iso 389-3:2016) German Ins.. 2016-06-01 現行
ISO 1996-1:2016 Acoustics - Description, measurement and assessment of environmental noise Part 1: Basic quantities and assessment procedures Internatio.. 2016-03-09 現行
I.S. EN ISO 389-3:2016 Acoustics - Reference Zero for the Calibration of Audiometric Equipment Part 3: Reference Equivalent Threshold Vibratory Force Levels for Pure Tones and Bone Vibrators (iso 389-3:2016) National S.. 2016-03-06 現行
ISO 389-3:2016 Acoustics - Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators Internatio.. 2016-01-04 現行
DIN EN 60645-1 (2015-11) Electroacoustics - Audiometric Equipment - Part 1: Equipment For Pure-tone Audiometry (iec 60645-1:2012) German Ins.. 2015-11-01 現行
KS I ISO 1996-1:2015 Acoustics — Description, measurement and assessment of environment noise — Part 1: Basic quantities and assessment procedures Korean Sta.. 2015-08-05 廢止
KS I ISO 1996-2:2015 Acoustics — Description, measurement and assessment of environmental noise — Part 2: Determination of environmental noise levels Korean Sta.. 2015-08-05 廢止
ISO/DIS 1996-2 Acoustics - Description, measurement and assessment of environmental noise Part 2: Determination of environmental noise levels Internatio.. 2015-06-02 現行
15/30313896 DC Bs En Iso 389-7:2005/Amd 1 - Acoustics - Reference Zero For The Calibration Of Audiometric Equipment - Part 7: Reference Threshold Of Hearing Under Free-Field And Diffuse-Field Listening Conditions British St.. 2015-05-15 被替代
cacheName: