[KongchangAI]
Unverified90% confidenceSolutionTime unknown

隔音毡+隔音棉(离心玻璃棉/岩棉)叠加是标准组合:隔音棉负责吸收空腔内声波(吸音),隔音毡负责阻挡声波穿透(隔音质量层),两者功能互补,单用任一都效果打折

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