Transcription: Cross-section of an electron microscope. Manifold, electron gun, condenser, aperture changer, aperture diaphragm, stage, electron beam, electron beam positioning, beam diameter reduction, focusing lenses, visual transmission, vacuum chamber, coupe de microscope electronic, canalisation de pompeage, canal à electron, condenser, command de selection de l'uverture, diafragme du verture, For more specimens, electron-based vessels, in-lax concentration of the vessels, transmission of images, I am David.
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