Unverified85% confidenceDecision RuleTime unknown
卧室相邻或需安静环境的卫生间，选噪音≤35dB(A)的机型；一般家用建议≤40dB。DC直流电机比AC交流电机噪音低3-5dB且可调速
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Unverified卧室、书房等静音需求场所建议选噪音≤35dB的机型，且优先选外转子电机或低转速大叶片设计；卫生间可放宽至45dB以内88% similarUnverified卧室夜间使用建议选择最低档噪音≤30dB的机型，直流变频电机(DC)通常比交流电机(AC)在低速档安静5-10dB，标称转速可低至200rpm以下86% similarUnverified卧室或书房邻近的排气扇噪音应≤35dB，普通轴流扇多在40-50dB，静音需求选贯流式或DC直流电机机型85% similarUnverified卧室相邻或安静需求高的卫生间选噪音≤40dB机型，全天运行的湿度感应机型更应控制在35dB以内85% similarUnverified卧室或书房附近的排气扇优先选噪音≤40dB的机型，超过45dB在安静环境下会明显干扰；工装或公厕可放宽到50dB以内82% similar
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