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The Understanding Of Vacuum Vacuum Flask
Sep 30, 2017

Many people think that the Thermos flask will make its insulation effect better, it is not. Some people have measured the temperature-time curve of different water storage of thermos flask, and concluded that under the same conditions, the temperature change rate of the thermos flask is the slowest when the water storage capacity is about 90℅. So it's better not to fill the thermos.