Unverified80% confidenceDecision RuleTime unknown
记忆棉颈枕的支撑力在低温环境（＜10℃）下会明显变硬，长途飞机高空客舱温度偏低时，选密度50-60D的慢回弹记忆棉比高密度款更适应体温回弹
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Long-term
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