Unverified85% confidenceDecision RuleTime unknown
封闭式排烟净化器优于开放式吸风口:前者将烟雾吸入后经HEPA+活性炭净化再排回室内,适合无窗环境;开放式仅靠风扇吹散或需管道排向窗外,室内使用会造成二次污染
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85%
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Long-term
Relevance
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