[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

覆盖长度以颈椎第7节(C7)到腰椎(L5)为完整防护,成年男性有效防护段建议≥45cm;仅护胸椎不护腰椎的短款不适合摩托摔车场景

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