[KongchangAI]
Unverified87% confidenceTradeoffTime unknown

稳定性与灵活性矛盾:无轮固定式最稳但需全程抬起费力,四轮最省力但稳定性最低易失控;两轮款(前轮后滑垫)是平衡点,适合力气不足又需要一定稳定的老人

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87%
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