锥体上电位变化可以等效为一个与锥体形状与掺杂相关的串联电阻的作用，这一电阻对单尖发射电流有负反馈作用。
This resistance, which is concerned with the doping and shape of the emitter, has a negative feedback action to the emission current of the emitter.
分别讨论了聚焦极电位、聚焦极孔径以及栅极电位对发射电子束的影响。
Influence of focus electrode bias, focus hole size and grid electrode bias on the emission electron beams was discussed.
应用推荐