Unverified90% confidenceDecision RuleTime unknown
工业噪音、装修、机场环境选NRR≥32/SNR≥36的PU慢回弹海绵塞；睡眠防打鼾选NRR22-28、佩戴柔软的硅胶或蜡质塞即可，过度隔音反而会放大心跳耳鸣声
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