[KongchangAI]
Unverified82% confidenceTradeoffTime unknown

五折结构折叠次数多,长期频繁开合后伞骨连接处和收纳套管的耐久性弱于折数更少的伞,属于轻便设计的结构性代价。

1
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82%
Confidence
Long-term
Relevance
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