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(lái)到寰標(biāo)網(wǎng)! 客服QQ:772084082 加入會(huì)員
已選條件: 電聲學(xué)
每頁(yè)顯示20 條,共找到 1855 條結(jié)果 <1/93>
標(biāo)準(zhǔn)編號(hào) 標(biāo)準(zhǔn)名稱(chēng) 發(fā)布部門(mén) 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(xiàn)行
BS EN 61157:2007+A1:2013 Standard Means For The Reporting Of The Acoustic Output Of Medical Diagnostic Ultrasonic Equipment British St.. 2019-07-01 現(xiàn)行
I.S. EN 61157:2007 Standard Means for the Reporting of the Acoustic Output of Medical Diagnostic Ultrasonic Equipment (iec 61157:2007 (eqv)) National S.. 2019-07-01 現(xiàn)行
IEC 60601-2-37 Ed. 2.1 Medical electrical equipment Part 2-37: Particular requirements for the basic safety and essential performance of ultrasonic medical diagnostic and monitoring equipment Internatio.. 2019-07-01 現(xiàn)行
I.S. EN IEC 60942:2018 Electroacoustics - Sound Calibrators National S.. 2018-03-27 現(xiàn)行
JIS C 1509-2:2018 Electroacoustics - Sound Level Meters - Part 2: Pattern Evaluation Tests Japanese S.. 2018-03-20 現(xiàn)行
IEC 60942 Ed. 4.0 Electroacoustics - Sound calibrators Internatio.. 2017-11-29 現(xiàn)行
IEC 62489-1 Amd.2 Ed. 1.0 Amendment 2 - Electroacoustics - Audio-frequency induction loop systems for assisted hearing Part 1: Methods of measuring and specifying the performance of system components Internatio.. 2017-11-27 現(xiàn)行
IEC 62489-1 Ed. 1.2 Electroacoustics - Audio-frequency induction loop systems for assisted hearing Part 1: Methods of measuring and specifying the performance of system components Internatio.. 2017-11-27 現(xiàn)行
IEC 60118-4 Amd.1 Ed. 3.0 Amendment 1 - Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements Internatio.. 2017-11-09 現(xiàn)行
IEC 60118-4 Ed. 3.1 Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements Internatio.. 2017-11-09 現(xiàn)行
I.S. EN 60645-1:2017 Electroacoustics - Audiometric Equipment Part 1: Equipment for Pure-tone and Speech Audiometry National S.. 2017-10-24 現(xiàn)行
KS C IEC 60601-2-37:2017 Medical electrical equipment - Part 2-37:Particular requirements for the basic safety and essential performance of ultrasonic medical diagnostic and monitoring equipment Korean Sta.. 2017-09-29 廢止
JIS C 1509-1:2017 Electroacoustics - Sound Level Meters - Part 1: Specifications Japanese S.. 2017-09-20 現(xiàn)行
KS C IEC 60118-15:2017 Electroacoustics — Hearing aids — Part 15: Methods for characterising signal processing in hearing aids with a speech-like signal Korean Sta.. 2017-08-29 廢止
KS C IEC 60318-3:2017 Electroacoustics — Simulators of human head and ear — Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry Korean Sta.. 2017-08-29 廢止
KS C IEC 60318-6:2017 Electroacoustics — Simulators of human head and ear — Part 6: Mechanical coupler for the measurement of bone vibrators Korean Sta.. 2017-08-29 廢止
KS C IEC 60645-5A:2017 Electroacoustics — Audiometric equipment — Part 5:Instruments for the measurement of aural acoustic impedance/admittance Korean Sta.. 2017-08-29 廢止
KS C IEC 60118-4:2017 Hearing aids - Part 4:Magnetic field strength in audio - frequency induction loops for hearing aid purposes Korean Sta.. 2017-08-29 廢止
KS C IEC 60318-1:2017 Electroacoustics — Simulators of human head and ear — Part 1: Ear simulator for the measurement of supra-aural and circumaural earphones Korean Sta.. 2017-08-29 廢止
cacheName: