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单词 permanent magnet
释义
permanent magnet

Physics
  • See magnet.


Electronics and Electrical Engineering
  • A magnetized sample of a ferromagnetic material, such as steel, that possesses high retentivity and is stable against reasonable handling. It requires a definite demagnetizing flux in order to destroy the residual magnetism. A simple magnet consists of a single bar, which can be horseshoe shaped, of the material. A compound magnet has several suitably shaped bars or laminations fastened together. See also ferromagnetism; magnetic hysteresis.


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