Unverified80% confidenceTradeoffTime unknown
浮力越高（大浮筒/大体积壳体）越难在狭窄空间通过和存放，静水码头救援可选中等浮力折叠型，勿盲目追求最大浮力牺牲便携
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80%
Confidence
Long-term
Relevance
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First Seen
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