Unverified80% confidenceTradeoffTime unknown
保温层越厚保温越久但袋体越笨重、占书包空间越大；对幼儿园/小学生日常带餐，3-5mm珍珠棉+铝箔已够用，无需追求厚保温胆
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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