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单词 hermetically sealed
释义
hermetically sealed

Chemical Engineering
  • A term used to describe something that is fully sealed and without leaks. The compressor on a domestic refrigerator is hermetically sealed. The compressor typically has a steel outer shell that seals the vapour of the refrigerant into the system such that there are no leaks. The packaging of certain foods is hermetically sealed to ensure that no potentially contaminating air can enter and spoil the food.


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