Unverified90% confidenceDecision RuleTime unknown
作为常睡床使用时，床垫芯厚度需≥12cm且内含独立弹簧或高密度海绵（密度≥40kg/m³），纯拉杆铁架+薄棉垫结构长期睡易塌陷腰酸
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Unverified沙发床展开后床垫厚度＜10cm几乎必然睡感差，长期睡觉需选独立筒弹簧或高密度海绵床垫（厚度≥12cm，海绵密度≥30D）91% similarUnverified厚度选择：独立弹簧床垫总厚度需≥20cm才有足够填充缓冲层，＜18cm易感受到弹簧硬点；纯乳胶/记忆棉薄垫（＜8cm）需搭配硬板床或床垫底座使用87% similarUnverified床垫厚度并非越厚越好：厚度20-25cm适合弹簧结构；纯发泡/乳胶15-20cm即可；超薄款（＜10cm）多为床褥不宜长期作主睡垫。厚度需与床架高度匹配，避免上下床费力87% similarUnverified床垫厚度并非越厚越好：弹簧床垫20-25cm即可满足支撑，纯泡棉/乳胶床垫≥15cm才有足够承托；厚度＜10cm的多为薄垫或折叠垫，不适合长期主床使用87% similarUnverified厚度越厚不等于越好：弹簧床垫有效厚度看弹簧+舒适层，20cm弹簧床垫已足够；超过30cm多靠泡棉填充增厚，需匹配加高床架和床笠，且散热更差85% similar
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