[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

船舱机舱降噪应选用带铝箔或PVC隔音层的复合结构棉,纯吸音棉只吸不隔,柴油机低频噪声需要质量密度层(隔音膜面密度≥2kg/m²)才能有效阻隔

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