[KongchangAI]
Unverified86% confidenceTradeoffTime unknown

过滤效率与透气性存在矛盾:过滤层越致密(KN95)呼吸阻力越大(吸气阻力可达350Pa),儿童肺活量小久戴易缺氧头晕,非重污染环境下选KN90或医用外科级别更利于长时间佩戴

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86%
Confidence
Long-term
Relevance
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