Narrative 发表于 2025-3-26 21:16:16
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Dynamic (Oscillographic) Method of Investigation,target surface is required to remain clean, yet at the same time measuring the energy distribution of the secondary particles by the static method, i.e., taking one volt—ampere characteristic, is a long process, requiring several hours or more, and it is almost impossible to keep the surface clean for this period.nutrition 发表于 2025-3-27 06:16:52
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,Secondary Electron—Electron Emission,The secondary electron emission of metals under the influence of electrons, first discovered by Austin and Starke in 1902, has taken on considerable practical importance in recent years.SLUMP 发表于 2025-3-27 18:09:19
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