[KongchangAI]
Unverified92% confidenceDecision RuleTime unknown

背负系统的背长(背板长度)必须匹配躯干长(第七颈椎到髂骨连线),误差超过3cm会导致重量无法有效转移到腰胯,长时间背负腰酸肩痛。购买前应量取躯干长并选可调背长的型号

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92%
Confidence
Long-term
Relevance
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