Unverified80% confidenceTradeoffTime unknown
轻便性与承重耐用度矛盾：追求极致轻薄（＜80g）的折叠包通常用薄面料和细拉链，装超过5kg易变形或崩线；折中选120-180g、双层加固底的款
1
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80%
Confidence
Long-term
Relevance
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