Unverified80% confidenceDecision RuleTime unknown
拉链是三角包最易损部位，反复满载胀开会崩齿，优先选YKK拉链并选U型/环绕开口设计，取物顺手且受力分散
1
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80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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