“periodic electrostatic focusing”的概念、定义、翻译、参考文献-科学参考

单词	periodic electrostatic focusing
释义	periodic electrostatic focusing Encyclopedia 工学电子注聚焦释 periodic electrostatic focusing周期静电聚焦由一组沿电子注的传输路径排列的静电透镜所产生的周期变化的电场来聚焦电子注的聚焦方式。
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