意思是：电晕放电；
句子实例：
The characteristics of the magnet enhancement corona discharges and their functions for charging particles are introduced.
介绍磁增强电晕放电的特性及其对颗粒荷电的性能。
A plasma arc loudspeaker or plasma-dynamic loudspeaker is a loudspeaker that creates sound by varying air pressure through a corona discharge or electric arc.
等离子弧喇叭，又名等离子动态喇叭，是一种通过电晕放电或电弧改变空气压力发声的喇叭。
