[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

选购前计算年均滤网成本:复合滤网(HEPA+活性炭一体)更换频率高(半年~1年),独立分层滤网可单独更换颗粒/活性炭层,长期使用成本更低

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80%
Confidence
Long-term
Relevance
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