Unverified75% confidenceTradeoffTime unknown
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
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Unverified除甲醛型（厚活性炭）和纯颗粒物净化型是权衡关系：除醛滤芯风阻大、颗粒物CADR会下降，且活性炭吸附饱和后会二次释放，需比HEPA更勤更换89% similarUnverified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带HEPA的除甲醛机型，活性炭吸附饱和后会二次释放甲醛，需比颗粒物滤网更勤更换，除醛能力与滤芯成本成反比权衡86% similarUnverified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85% 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82% similar
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