Unverified80% confidenceDecision RuleTime unknown
阀门优先选带防倒流单向阀+双重锁扣的设计，普通塞式阀门孩子在水中易被顶开导致缓慢漏气；充气后阀门应能完全内嵌，避免摩擦皮肤
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80%
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Long-term
Relevance
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