英语词汇“internal lining”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	internal lining
释义	internal lining internal lining A lining of the internal surfaces of an HVAC duct with an incombustible acoustical material, such as fiberglass, so as to attenuate the transmission of airborne sound along the interior of the duct.
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