[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

软硬度与体压分散是权衡:过软虽包裹感强但支撑不足导致颈椎悬空,过硬则压力集中;理想状态是头颈接触面均匀受压而颈椎处有独立托举,波浪形/蝶形分区设计比整块均质海绵更能兼顾

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