Unverified83% confidenceDecision RuleTime unknown
承重能力看底部与提手固定方式：底部有加厚双层帆布或铆钉加固、提手采用X型或箱型走线且延伸缝到包身的款式，才能长期装电脑等重物不脱线
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83%
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Long-term
Relevance
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