Unverified88% confidenceTradeoffTime unknown
核心权衡在于极致便携性与防护效果之间：钥匙扣设计使其可以真正做到随身携带，但折叠薄膜贴合面部的密封性有限，通气效率低于硬质口袋面罩
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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