The theory of seea is based on the insulator ' s surface emitted secondary electrons when bombarded by electron , includes the process of electron - simulated desorption ( esd ) , the process of desorption gas ionization and the process of the ion influencing the flashover Seea理論以絕緣子表面在電子轟擊下發(fā)射二次電子為基礎(chǔ),包含了電子誘發(fā)脫附( esd ) ,和脫附氣體離子化并對閃絡(luò)過程產(chǎn)生影響等過程,對表面閃絡(luò)現(xiàn)象進(jìn)行了解釋。