Unverified70% confidenceFactTime unknown
记忆棉密度通常在40-50D区间用于护垫，密度越高回弹缓冲越好但也越硬；直接接触型护垫外层多包裹一层可拆洗棉麻或天鹅绒布套便于清洁
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70%
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Long-term
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