Unverified75% confidenceDecision RuleTime unknown
旋转马达是主要噪音源,齿轮式马达约35-45dB在安静卧室助眠时会被察觉,选购助眠用途优先看'静音马达/无级调速'标注,理想值≤30dB
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75%
Confidence
Long-term
Relevance
-
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