更新时间：2024-12-23 12:08:22
Noun:- the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
- electron donor
- Electron-cam
- electron brain
- electron doping
- electronyogram
- Electrons-ray
- electron spint
- electron alloys
- electron
- electron frame
- electron jammer
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