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ELECTRON GUN STRUCTURE WITH UNIPOTENTIAL AND BIPOTENTIAL LENS
ELECTRON GUN STRUCTURE WITH UNIPOTENTIAL AND BIPOTENTIAL LENS
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机译:具有双势透镜和双势透镜的电子枪结构
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摘要
An electron gun structure having a main focusing lens including a unipotential electron lens and a bipotential electron lens, the unipotential and bipotential electron lenses serving as a single main electron lens having a larger effective aperture thereby greatly reducing aberration.
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