时间:2022-08-13 20:09:05
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〔作单数用〕电声学。
Electroacoustics - sound level meters - specifications
电声学.声级计.规范
Electroacoustics - sound level meters - part 1 : specifications
电声学.声级计.第1部分:规范
Electroacoustics ; specifications for personal sound exposure meters
电声学.个人测声表规范
Electroacoustics - sound level meters - part 1 : specifications
电声学.声级计.第1部分:规范
Electroacoustics - specifications for personal sound exposure meters
电声学.个人测声表规范
Electroacoustics - sound level meters - pattern evaluation tests
电声学.声级计.型式评定试验
Electroacoustics . specifications for personal sound exposure meters
电声学.个人声音暴露计规范
Electroacoustics . octave - band and fractional - octave - band filters
电声学.倍频带和分倍频带滤波器
Electroacoustics - octave - band and fractional - octave - band filters
电声学.倍频带和分倍频带滤波器
Electroacoustics - octave - band and fractional - octave - band filters
电声学.倍频带和分倍频带滤波器