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单词 cold cathode
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cold cathode, [Electronics.]
  1. Electronicsa cathode, in an electron tube (cold-cathode tube′) or lamp, that emits electrons without having to be heated.
  • 1925–30

Collins Concise English Dictionary © HarperCollins Publishers::
cold cathode n
  1. a cathode from which electrons are emitted at ambient temperature, due to a high potential gradient at the surface
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