[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

拉珠款结构简单价低但大面积帘布拉动费力且珠链存在幼儿缠绕窒息风险;弹簧款操控轻便但寿命有限(反复使用易失力);宽度>2米或高频使用场景建议直接上电动管状电机

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