电子枪阴极 meaning in English

block cathode
cathode of electron gun

2 . to design an axial magnetic field . the cathode lies in 0 . 4 - 0 . 7 of peak value of the magnetic field and excursion channel in a uniform magnetic field to suppress space charge effects ; to design transition section between the gun and excursion channel in converse computation . 3
选择电子枪阴极处于轴向聚焦磁场峰值的0 . 4 - 0 . 7倍处;漂移通道(互作用区)位于均匀轴向聚焦磁场中,以抑制电子束的空间电荷效应;使用反算法设计电子枪和漂移通道之间的过渡区。