The corona voice strengths and levels of radio interference produced by positive polarity wire have little changes, and those produced by negative polarity wire increase with temperature.
正极性导线电晕声音和无线电干扰变化都不大；负极性导线电晕声音和无线电干扰都增大。
2
The corona inception voltage produced by negative polarity increased at first and then decreased, and corona characteristic has little changes.
负极性电晕起晕电压先升高后降低，电晕特性变化很小。
3
The sterilization results of the positive corona discharge plasma are better than the that of the negative one with the same other discharge conditions.