[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

透气性与防护性此消彼长:日常公共场所防飞沫选医用外科型(3层,透气好);仅雾霾/高风险环境短时佩戴才用KN95儿童型,且单次佩戴不超过30-60分钟需摘下休息

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85%
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