Unverified70% confidenceFactTime unknown
带钢丝芯的手腕伸缩绳内芯直径约1-1.5mm，标称承重多在15-25kg，可承受幼儿突然冲刺的拉拽
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70%
Confidence
Long-term
Relevance
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Unverified承重拉力应≥25kg（成年人突然拽拉的瞬时冲击力远超宝宝体重），钢丝弹簧绳比纯尼龙绳抗拉且回弹缓冲更好，认准断裂强度标注80% similarUnverified牵引绳承重需≥15kg拉力测试：孩子突然全力冲刺或跌倒时瞬间拉力可达自重2-3倍，10kg孩子瞬间拉力可达20-30kg，弹性缓冲绳能减少手腕和孩子肩部冲击79% similarUnverified提手宽度≥3cm且带软胶包裹的款式，装载10kg以上工具时手部压强分布更均匀；细钢丝提手在满载时会勒手，超过5kg即明显不适79% similarUnverified胸针直径超过6cm或重量超过30g时，建议选带双针或磁吸固定方式，单针会因重量下垂旋转，破坏造型79% similarUnverified背带宽度≥3.8cm且带海绵/网眼衬垫的胸包，长时间斜挎不易勒肩；纯尼龙带＜2.5cm的负重超过1kg会明显压肩78% similar
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