The stability of the welding arc depends mainly on the voltage and the gas ionization when current zero-crossing as well as the electronemission ability of the electrode.
其电弧稳定与否，主要取决于电流过零瞬间的电弧空间电离度、 电极发射电子能力及再引燃电压的上升速度。
2
The secondary electronemission from the dielectric layer makes the discharge current increase.
绝缘介质层的二次电子发射，使放电电流增大。
3
The electron back bombardment phenomenon, which results in anomalous increase of gun currentemission, has been observed in a series of our side coupled standing wave accelerating tubes.