Unverified75% confidenceTradeoffTime unknown
保温层越厚保温越好但杯身越粗越重，容量相同时全真空双层杯比单层重约50%，追求极致便携可选薄壁款但牺牲保温时长
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified保温层越厚越保温但杯壁越厚、外径越大、越重；同容量下真空双层杯比单层重且笨重，追求便携和保温需要在杯身尺寸上做取舍90% similarUnverified保温性能与重量、便携性成反比：真空双层+厚壁保温更久但更重更粗，追求轻便的单层或薄壁款保温时长通常缩水84% similarUnverified保温性能越好杯壁越厚重，真空双层保温杯比单层塑料杯重2-3倍；追求全天保温会牺牲携带便利性，纯提醒饮水用途可选轻量塑料/Tritan材质放弃保温83% similarUnverifiedR值越高（含羽绒/化纤填充或反射层），收纳体积越大且重量越增；追求极致轻量常牺牲隔热，冬季轻量与保暖不可兼得需二选一或用泡沫垫叠加79% similarUnverified保温性能越强壁越厚、口径越小，导致同外径下实际容量减少约15-20%；追求超长保温会牺牲有效容量和轻便性79% similar
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