| 单词 | electron gun |
| 释义 | > as lemmaselectron gun electron gun n. Science a device in which electrons obtained by thermionic emission from a heated cathode are emitted as a narrow beam. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle avoiding strong interaction > electron > [noun] > device emitting beams electron gun1924 gun1933 undulator1951 1924 Brass World Feb. 52/1 The electron gun is not swung about, but its stream of projectiles is deflected by means of electric or magnetic forces. 1930 Chem. Abstr. 2044 The electron gun..consists of a hot filament near the small hole in a diaphragm and on the axis of a hollow cylinder at a pos. potential, which produces a ‘visible’ beam of electrons. 1953 S. W. Amos & D. C. Birkinshaw Television Engin. I. iv. 52 The electron gun is an electrode assembly designed to produce a narrow beam of electrons. 1991 Engineering July–Aug. 40/1 Ingress of metal vapour into the electron gun during welding can cause high voltage breakage between gun electrodes. 2005 Sci. Amer. (U.K. ed.) June 82/1 I replaced my electron-gun boob tube with a 42-inch plasma flat panel. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。