This paper derived the formulation for the real efficient emission coefficient of secondary electron under the condition that high energy primary electron incident on metal obliquely.

推导出高能原电子斜入射时的金属的有效真二次电子发射系数的表达式，它与入射角的余弦近似成反比。

youdao

The study showed that the maxim secondary emission coefficient of rare earth molybdenum cathode materials was 2.45, which meet the requirement (>2.0) of magnetron to the cathode materials.

研究结果表明，稀土钼次级发射材料的阴极试样的最大次级发射系数达到2.45，满足了磁控管对阴极材料的次级发射系数2.0以上的应用要求。

youdao

In this paper, the influence of flow coefficient of injector hole, hole diameter and needle lift on emission is studied through contrast experiment of different injectors.

本文通过对柴油机配置不同喷油器所进行的排放对比试验，研究分析了喷油器喷孔流量系数、喷孔直径、针阀升程对排放的影响。

youdao