. "electron optics"@en-us . "105749922"@en-us . "0"^^ . . . "0"^^ . . "06115004-n"^^ . . "electron optics"^^ . . . "104654555"@en-us . "the branch of electronics that deals with beams of electrons and their focusing and deflection by magnetic fields"@en-us . "106115004"^^ . . .