The polarity of impulse voltage and the polarity of insulator surface electric charge can affect the corona initial time of insulator, the change time - interval and the corona current.

外拖冲击电压的极性与绝缘子表面电荷极性是否相同会影响绝缘子的电晕起始时刻、由流注向先导的转变时间间隔和流注电晕电流。

Meanwhile, the medium has excellent electric insulating property and great ozone resistant, corona resistant, water-repellent and moisture resistant performance.

同时它具有优良的电气绝缘性能和优良的抗臭氧、耐电晕、憎水防潮性能。

Technology employing plasma body of corona to electric atomization of the antirust oil to spray is a new item of spraying steel plate.

应用电晕等离子体对防锈油荷电雾化进行喷涂的技术，是一项新的钢板喷涂防锈油技术。

Reasonable matching of wafer and wire: the advanced matching of wafer improves average voltage in electric field and current density of wafer corona, which the dedusting efficiency is higher.

板线匹配更合理。先进的板匹配，有效地提高了电场平均电压和板电晕电流密度，收尘效率更高。

The phenomena of back corona and corona obstruction often take place in electric precipitators of coal-fired power plants and lead to low dust removal efficiency.

燃煤电厂所使用的电除尘器常常会出现反电晕和电晕封闭现象，导致除尘效率不高。