Electroacoustics. Instruments for measurement of aircraft noise. Performance requirements for systems to measure sound pressure levels in noise certification of aircraft
电声学 飞机噪声测量仪器 飞机噪声认证中声压级测量系统的性能要求

2018-08-24

Electroacoustics - Instruments for measurement of aircraft noise - Performance requirements for systems to measure sound pressure levels in noise certification of aircraft
电声学飞机噪声测量仪器飞机噪声认证中测量声压级的系统性能要求

2018-05-08

电声学 飞机噪声测量仪器 运输机噪声评定用1/3倍频程声压级测量系统的性能要求
Electroacoustics-Instruments for measurement of aircraft noise-Performance requirements for systems to measure on-third-octave band sound pressure levels in noise certification of transport-category aeroplanes

2013-10-17

전기음향 — 항공기 소음 측정용 장비 — 수송 범주 항공기의 소음 인증 시 1/3 옥타브 대역 음압 레벨을 측정하기 위한 시스템의 성능 요구사항
电声学 - 飞机噪声测量仪器 - 运输类飞机噪声认证中测量三分之一倍频程声压级的系统性能要求

2017-08-29

电声学 航空噪声测量仪器在运输类飞机噪声合格审定中测量1/3宽带倍频声压级装置的性能要求
Electroacoustics-Instruments for measurement of aircraft noise-Performance requirements for systems to measure one-third-octave band sound pressure levels in noise certification of transport-category aeroplanes

2008-10-20

전기음향 — 항공기 소음 측정용 장비 — 수송 범주 항공기의 소음 인증 시 1/3 옥타브 대역 음압 레벨을 측정하기 위한 시스템의 성능 요구사항
电声学.飞机噪声测量仪器.运输类飞机噪声认证中测量三分之一倍频带声压级系统的性能要求

2017-08-29