给出了实验装置，某些实验现象和曲线，并从电子光学角度做了定性分析。
The experimental setup, some experimental phenomena and curves are given and analysed qualitatively from the viewpoint of electronic optical field distribution.
给出了实验装置，某些实验现象和曲线，并从电子光学角度做了定性分析。
The experimental setup, some experimental phenomena and curves are given and analysed qualitatively from the viewpoint of electronic optical field distribution.
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