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Unverified90% confidenceDecision RuleTime unknown

婴儿哄睡设备音量应控制在50分贝以下(约相当于安静的图书馆),距离婴儿至少30cm以上,避免长期高分贝损伤听力;美国儿科学会研究建议白噪音机音量不超过50dB

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