Unverified85% confidenceDecision RuleTime unknown
学步期防摔背包的缓冲区应集中在后脑勺投影区域，EVA或记忆棉厚度需≥2cm且覆盖枕部到尾椎，仅在两肩间加护垫的属于装饰款，防护无效
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85%
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Long-term
Relevance
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