電でん子し銃じゅうでんしじゅうMeanings1nounelectron gunA device that emits a focused beam of electrons, used in cathode-ray tubes, electron microscopes, and other vacuum-tube equipment.電でん子し銃じゅうから放ほう出しゅつされた電でん子しビームが蛍けい光こう体たいに当あたる。The electron beam emitted from the electron gun hits the phosphor.
