为满足大电流密度电子发射的需要，对锑铯光电阴极的制备工艺进行了研究。
To meet the needs of high electron current density photocathodes, the processes for preparing cesium antimonide have been studied.
大气压非热电弧的直径是确定电弧电流密度、从而确定等离子体电子密度和电子温度的重要参数之一。
The diameter of non-thermal arc plasma is an important parameter to determine the current density of arc that determines temperature and density of the electrons.
以场致发射理论为基础的真空微电子器件，因其具有功耗低、电流密度大、频率高等诸多优点而倍受人们关注。
Vacuum micro-electronics devices, which are based on field emission theory, are more and more widely applied, because of their low power consumption, high current density and high frequency.
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