Unverified75% confidenceTradeoffTime unknown
除甲醛需要更厚更重的活性炭层，会显著增加风阻从而拉低颗粒物CADR并提高噪音；纯净化PM2.5和高效除醛难以在同一台机器上兼得最优
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75%
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Long-term
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Unverified除甲醛功能与颗粒物净化会互相牵制：活性炭层增厚提升除醛能力但增大风阻，降低颗粒物CADR并增加噪音。纯除颗粒物需求不必为除醛滤芯买单87% similarUnverified除甲醛能力与颗粒物净化存在权衡：活性炭增多可提升除醛但会减小HEPA有效面积或增大风阻，纯颗粒物净化型机器除醛能力往往一般85% similarUnverified除甲醛效果与CADR是权衡关系：活性炭滤芯越厚除醛越强但会增加风阻、降低颗粒物CADR并增大噪音，纯除PM2.5和纯除醛在单机上难以兼顾最优83% similarUnverified除甲醛能力(活性炭克重)与颗粒物CADR是此消彼长：厚活性炭层增加风阻降低颗粒物CADR，一体滤芯往往两者都平庸；重度除醛建议选HEPA与活性炭分层可分别更换的机型81% similarUnverified除甲醛需要大量活性炭滤芯，但活性炭吸附饱和后会二次释放，追求除醛的机型滤芯更换更频繁、耗材成本更高81% similar
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