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单词 electron-gun density multiplication
释义 electron-gun density multiplication
[i`lek´trän ´gǝn `den·sǝd·ē ´mǝl·tǝ·plǝ`kā·shǝn]
ELECTRONICS
Ratio of the average current density at any specified aperture through which the electron stream passes to the average current density at the cathode surface.
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