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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