Unverified85% confidenceTradeoffTime unknown
双层玻璃杯利用中间空气层隔热，装热饮时外壁温度低可直接手持，但热饮保温时间反而比单层陶瓷短，容量350ml以内为宜
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85%
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Long-term
Relevance
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Unverified双层玻璃杯利用中间空气层隔热，外壁不烫手可直接握持，但热饮保温时间反而短于单层陶瓷杯（约缩短30%），因空气层阻碍热量但也无蓄热体95% similarUnverified双层玻璃杯利用中间真空/空气隔热层实现隔热不烫手，但不可放微波炉加热且骤冷骤热易夹层开裂；只适合泡茶、冷饮和温水85% similarUnverified双层真空钛杯保温性能好但不能直接明火加热（真空夹层受热变形），需要边煮边喝选单层钛杯，只保温不加热选双层82% similarUnverified保温性能越强壶壁真空层越厚，同容量下保温杯比普通水壶重且外径更大，500ml保温杯空杯约250-350g，纯轻量便携壶(单层)则牺牲保温80% similarPartially Verified单壁钛结构无保温能力，热饮会迅速散热、杯壁导热烫手，需要保温功能的场景不适合此杯79% similar
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