Unverified85% confidenceTradeoffTime unknown
四轮助行器轮径越大（20cm/8寸以上）越适合户外碎石、门槛地面，但整体更重更难折叠收纳；室内为主选小轮（12-15cm）更灵活
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85%
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Long-term
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Unverified四轮助行器轮径越大越好过户外门槛和地毯（建议前轮≥6英寸/15cm），但轮径大则整机重、折叠体积也大，纯室内使用选5英寸以下即可90% similarUnverified落地架底座建议直径≥25cm或采用三脚以上撑开结构，配重＜1kg的窄底座在挂满3把以上工具后重心偏移，触碰即倒83% similarUnverified轮径越大越省力越易过障碍：室外或有门槛环境选轮径≥125mm，纯平地室内可选75-100mm；轮径过小遇到3cm以上门槛会卡住82% similarUnverified轮径≥12.5cm（约5寸）才能较顺畅上下台阶和门槛，8cm以下小轮遇到2cm以上门槛会卡顿甚至倾覆81% similarUnverified层板间距应比常放物品高度多留5-8cm取放空间，落地架层高可调（打孔式或卡扣式）比固定焊接层更实用80% similar
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