| 11. | It's this vacuum flask assembly that keeps the contents insulated from the outside world.
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| 12. | Vacuum flasks are often used as insulated shipping containers.
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| 13. | Production of customized vacuum flasks " termos " for the water and guampas is common.
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| 14. | You cannot make a vacuum flask out of ice.
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| 15. | Then they visited Qiqihar, ate in a local restaurant and received Chinese vacuum flasks as gifts.
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| 16. | Several technological applications, such as NMR and MRI machines, rely on the use of double vacuum flasks.
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| 17. | Then, ice cubes and / or herbs are added to the water on to the vacuum flask.
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| 18. | In a vacuum flask they use a reflective material to reflect radiated heat back into the flask.
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| 19. | It was named for its superficial appearance to a Thermos bottle, a popular brand of vacuum flask.
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| 20. | Hence it is usually assembled into a vessel, similar in construction to a vacuum flask or Dewar.
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