Unverified80% confidenceDecision RuleTime unknown
叠放稳定性看箱盖凹凸卡扣设计：带四角嵌合槽的可叠3-4层不滑移，纯平盖只建议叠2层；承重标注≥10kg/个才适合底层放书本重物
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80%
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Long-term
Relevance
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