[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

冷感头巾按降温原理分两类:PVA/水凝胶蒸发型(需泡水激活,降温3-5°C,可持续1-2小时)和相变材料PCM嵌入型(无需泡水,恒温28°C以下自动激活,但重量更大)。短时外出选蒸发型,长途通勤选PCM型

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82%
Confidence
Long-term
Relevance
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https://kongchang.com/claim/311805
API
curl https://kongchang.com/api/v1/knowledge/claims/311805
MCP
get_claim(id=311805)