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"an anechoic chamber"
以上来源于: WordNet
ADJ having a low degree of reverberation of sound 无回声的
an anechoic recording studio
anechoic chamber 消声室，无回音室
Noise is measured in anechoic room.
噪音值是在无音室中的测量值。
youdao
Simple anechoic chamber was used for noise reduction.
根据降噪量要求对设备间采用简易消声室设计。
An anechoic chamber is used to test the iPhone's signal strength.
iPhone的信号强度需要在消声室中进行。
To even reasonably run a scientific test, the iPhone should have been sitting on a non-metallic pedestal inside an anechoic chamber.
FORBES: The iPhone Antenna: It's Complicated
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