[KongchangAI]
Unverified82% confidenceTradeoffTime unknown

凝胶自激活型冷感项圈(PCM相变材料)在30℃环境下降温持续时间通常仅1.5-2小时,且降温幅度约3-5℃;水激活蒸发型可持续4-6小时但需环境通风,闷热潮湿天气几乎失效

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82%
Confidence
Long-term
Relevance
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Stable URI
https://kongchang.com/claim/311795
API
curl https://kongchang.com/api/v1/knowledge/claims/311795
MCP
get_claim(id=311795)