Unverified82% confidenceTradeoffTime unknown
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
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82%
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