we make an electron gun which consists of a tungsten wire heated by an electric current . 我们制造了一把电子枪,它包括一根用电流加热的钨丝。
one type is the iconoscope. it contains three essential parts--a mosaic, a collector ring and an electron gun . 一种是光电摄象管,它有三个基本部件--嵌镶光电阳极、集电环和电子枪。
an electron gun shoots a beam of electrons at a screen coated with a substance which lights up when the electrons hit it . 电子枪把电子束射向萤光屏,萤光屏上涂有一层被电子射束照射时能发光的物质。
design of the electron gun for s-band high power twt 波段大功率行波管电子枪设计
experiment and operation of bepc electron gun system 电子枪系统测试与运行