positive corona
... 无泄漏保藏 positive confinement 正极电晕 positive corona 同向耦合 positive coupling ...
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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。
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.
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