Unverified83% confidenceTradeoffTime unknown
分贝越高的哨通常腔体越大、体积越大，超过120dB的专业救援哨往往长度达6-8cm不便随身携带；日常挂钥匙/背包选105-115dB的扁平小型哨即可兼顾便携
1
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83%
Confidence
Long-term
Relevance
-
First Seen
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