Unverified85% confidenceDecision RuleTime unknown
两块低R值垫子可叠加使用，R值近似相加（如R2.0+R2.5≈R4.5），比单买一块高R值冬季垫更灵活省钱
1
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85%
Confidence
Long-term
Relevance
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Unverified两块R值可叠加（如R值2.0泡沫垫+R值3.5充气垫≈R值5.5），冬季用便宜泡沫垫垫底比单买高R值垫更经济且防刺穿83% similarUnverified两张R值可叠加：一张R值2.5的充气垫 + 一张R值2的泡沫垫，实际隔热约等于R值4.5，比单买高R值垫更省钱且泡沫垫可防扎81% similarUnverifiedR值越高通常越重越贵，冬季专用垫R5往往比三季垫重50%以上，只玩三季不必为高R值付溢价66% similarUnverified板材越薄价格越低但越易变形，层板越厚/带折边越贵但更稳，日常收纳选1.0mm折边款即可，无需追求过厚61% similarUnverified厚度与用量存在权衡：加厚耗材单价高、每卷/每包数量少，但降低破损浪费率；一次性快消场景（临时打包）选薄款走量更划算，长期冷冻/收纳选加厚更省60% similar
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