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单词 magnetron
释义

WordReference Random House Unabridged Dictionary of American English © 2024
mag•ne•tron  (magni tron′),USA pronunciation n. [Electronics.]
  1. a two-element vacuum tube in which the flow of electrons is under the influence of an external magnetic field, used to generate extremely short radio waves.
  • magne(to)- + -tron 1920–25

Collins Concise English Dictionary © HarperCollins Publishers::
magnetron /ˈmæɡnɪˌtrɒn/ n
  1. an electronic valve with two coaxial electrodes used with an applied magnetic field to generate high-power microwave oscillations, esp for use in radar
Etymology: 20th Century: from magnet + electron
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