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单词 electron lens
释义 electron lens
A device used to focus an electron beam. It is analogous to an optical lens but instead of using a refracting material, such as glass, it uses a coil or coils to produce a magnetic field or an arrangement of electrodes between which an electric field is created. Electron lenses are used in electron microscopes and cathode-ray tubes
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更新时间:2025/6/23 4:35:08