coronal discharge的用法和样例：
例句
- In this paper, a spectrum analysis system with high sensitivity has been set up, and corona spectra in air were obtained under several different discharge conditions.
本文建立了一套高灵敏度的光谱分析系统，对空气中几种不同放电条件下的电晕放电进行了光谱分析。 - 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。
