Unverified83% confidenceDecision RuleTime unknown
背带宽度≥3.5cm才能有效分散肩部压力，单肩托特包若经常装3kg以上物品应选加宽加厚背带或改用双肩/斜挎设计，窄带（<2.5cm）长时间背会勒肩
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83%
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Long-term
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