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单词 ignitron
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ig•ni•tron  (ig nītron, igni tron),USA pronunciation n. [Electronics.]
  1. Electronicsa cathode-arc vacuum tube with an auxiliary electrode projecting into a pool of mercury: it conducts current when the anode is positive.
  • igni(ter) + -tron 1930–35

Collins Concise English Dictionary © HarperCollins Publishers::
ignitron /ɪɡˈnaɪtrɒn; ˈɪɡnɪˌtrɒn/ n
  1. a mercury-arc rectifier controlled by a subsidiary electrode, the igniter, partially immersed in a mercury cathode. A current passed between igniter and cathode forms a hot spot sufficient to strike an arc between cathode and anode
Etymology: 20th Century: from igniter + electron
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