[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

过滤效率越高(N95/N99)呼吸阻力越大越闷热,对哮喘或心肺功能弱者反而增加负担;花粉季日常防护KN90/PM2.5级在防护与透气间更平衡

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85%
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Long-term
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