cathode emission current density

例句：

1. 1.The measurement of cathode emission current density is crucial for understanding the performance of the device.
   测量阴极发射电流密度对于理解该设备的性能至关重要。
2. 2. In this study, we investigated the effect of cathode emission current density on the performance of the device.
   在本研究中，我们研究了阴极发射电流密度对设备性能的影响。
3. 3.The researchers found that increasing the cathode emission current density could improve the efficiency of the device.
   研究人员发现，增加阴极发射电流密度可以提高设备的效率。