英语词汇“active sound attenuator”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	active sound attenuator
释义	active sound attenuator active sound attenuator A special type of sound attenuator that incorporates a sound source which generates sound waves intended to cancel some of the noise generated by the fans in an HVAC system.
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