[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

背长可调节设计使其能适配较宽泛的身型,但背负系统以轻量化为优先,腰托缓冲较薄,长时间负重超过约10kg后腰部支撑感明显不足

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85%
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Long-term
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