[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

坐垫(chamois)密度分区决定长途舒适度:坐骨接触区应≥250g/m²高密度海绵,会阴前部用低密度或开孔设计减压,单一均匀厚度坐垫超过2小时会压迫麻木

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