英语词汇“electron lens”是什么意思，“electron lens”的读音、用法及例句翻译-乐坝网

词汇	electron lens
释义	electron lensn.（名词） Any of various devices that use an electric or a magnetic field to focus a beam of electrons.电子透镜：通过一个电场或一个磁场来使一束电子会聚的一种装置
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