千万别撕！保温杯底的贴纸原来这么重要
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近日，一位保温杯业内人称，保温杯底部的贴纸实际上被称为保护片，如果撕掉这层保护片，保温效果就可能会消失。这是真的吗？保温杯是如何实现保温的？底部的贴纸里有藏着什么核心技术？本期观察一下，我们来看看保温杯底贴纸的秘密…
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