Unverified85% confidenceCautionTime unknown
双壁钛杯保温效果有限，因夹层非真空只是空气隔热，保温性远不如真空不锈钢保温杯，且双壁杯不能直接架火加热(夹层空气受热膨胀有风险)
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85%
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Unverified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91% 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87% similarUnverified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84% similarUnverified双层真空杯严禁直接放明火或电磁炉加热，夹层受热会导致鼓胀甚至爆裂，只能盛装已烧开的液体保温82% similarUnverified纯钛单壁无保温性能，倒入热水后杯壁迅速导热烫手，冬天热饮冷得快，有保温需求的不适合82% similar
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