of course can!

Put the ice cream inside to keep the temperature.

The middle of the thermos cup is a double-layer structure, and the vacuum state is drawn between the two layers.

There are two methods for heat loss of objects in the air

1. Heat transfer-the heat conduction of the container and the heat convection of air. 2.Heat radiation.

So the thermos cup insulation needs to be designed for the above points:

*The vacuum state can avoid heat convection.

*The inner layer of the vacuum flask is silver, which can reflect back the heat radiated from the inside of the container.

Conversely, if cold liquid is stored in the bottle, this kind of bottle can prevent the external heat from radiating into the bottle.

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