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focusing lenses /ˈfəʊkəsɪŋ ˈlɛnzɪz/ n

中文：聚焦透镜

中文 · 聚焦透镜Español · lentes de enfoqueFrançais · lentilles de mise au point
Meaning：System of magnetic lenses (electromagnets) that concentrate the electron beam on one spot on the specimen.
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Electron microscope cross-section

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