Unverified50% confidenceDecision RuleTime unknown
坐垫宽度应根据坐骨间距选择：竞技激进姿势的坐骨着力点前移，坐垫宽度=坐骨间距-数值偏窄（通常130-145mm）；休闲直立姿势坐骨承重靠后，需坐骨间距+20mm左右（通常155-175mm）
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