Unverified80% confidenceDecision RuleTime unknown
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
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