Unverified80% confidenceDecision RuleTime unknown
扇叶数量越多（7叶及以上）、叶片弧度越大，同风量下转速越低噪音越小；金属扇叶散热好但比ABS塑料叶更易产生高频共振噪音
1
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80%
Confidence
Long-term
Relevance
-
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