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单词 insulator
释义
insulator

Physics
  • A substance that is a poor conductor of heat and electricity. Both properties usually occur as a consequence of a lack of mobile electrons. See energy bands.


Electronics and Electrical Engineering
  • A material, such as glass or ceramic, that has a very high resistance to electric current so that the current flow through it is usually negligible. An insulator is used to prevent the loss of electric charge or current from a conductor. See also energy bands.


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