如果碳纳米管阴极附近的真空度太低，将产生打火、气体电离、离子回轰阴极等问题，将导致阴极发射电流的迅速衰减。
If the vacuum near the cathode is too poor, it will generate spark, gas ionization and ion bombardment on cathode, which can result in a fast attenuation of the emission current.
等离子显示器是平板显示器中最好的一种，像霓光灯泡，等离子显示器在电流存在的情况下使用一种发光的气体。
A gas-plasmadisplay is the best type of flat screen. Like a neon light bulb, the plasma display uses a gasthat emits light in the presence of an electric current.
通过上述离子化过程会产生气体放电，从而使阻抗降低，放电电极之间就会有大量的电流流动，而产生较强的可视光。
The ionization will realize electric discharge of gas, so as to lower down the resistance, realize large amount of current flow between discharge electrodes and generates stronger visible light.
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