[KongchangAI]
Unverified79% confidenceTradeoffTime unknown

填充软硬度存在权衡:太软(回弹快、低密度)短期舒适但支撑不足,久坐后腰部下陷加重酸痛;太硬则贴合差压迫脊椎。孕妇建议选中等偏硬、按压回弹1-2秒的记忆棉

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