Unverified75% confidenceTradeoffTime unknown
宽度可伸缩款的横杆在拉伸至最大长度时承重会大幅下降（接头处为薄弱点），需求宽度固定时优先选一体不可伸缩款
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75%
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Long-term
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Unverified可伸缩分隔板越靠近最大拉伸值稳定性越差，选购时让常用尺寸落在伸缩范围的中段而非极限值89% similarUnverified伸缩范围越大意味着重叠管段越长、内管越细，稳定性和承重反而下降；大范围款(如180-300cm)承重普遍低于固定尺寸款，追求承重应选伸缩比小的产品86% similarUnverified伸缩范围越大的产品，重叠搭接段越长，实际有效承重面反而变窄，且完全伸展时中部支撑最弱。选伸缩幅度刚好覆盖柜宽的型号比选大范围通用款更稳固84% similarUnverified伸缩范围越大（如30-60cm），中间伸缩段刚性越弱、下垂越明显，同价位下宽域款承重不如窄域款；如柜宽固定，优先选伸缩区间刚好覆盖的窄幅款以保刚性83% similarUnverified伸缩管越长稳定性越差：单节伸缩幅度越大，中间搭接段的抗侧向摆动能力越弱。追求大跨度可选支持中间加装立柱或多段拼接的款，牺牲一点安装便捷性83% similar
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