[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

单肩负重超过5kg时,肩带宽度应≥7cm并带EVA/记忆海绵填充,同时需有胸扣分散压力;无胸扣的窄肩带背包长期通勤易造成斜方肌劳损

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