Work begins with the improvement of volt-ampere characteristics of voltage instrument transformer, to ensure that saturation phenomenon does not appear.
从改善电压互感器伏安特性着手，使电压互感器在运行中不出现饱和现象。
The influence of argon flow, are length, the inner diameter of hollow cathode on the voltage - ampere characteristics are discussed.
并讨论了氩气流量、弧长和空心阴极内径对电弧伏安特性的影响。
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