corona effect
7.The Heat-Engine Effect of the Material Exchange in Solar Super Atmosphere——The Model of the Chromosphere-Corona Transition Region
10.The effect of alumina addition on dielectric properties of the composites was studied; the results show that the corona-resistant lifespan of PI film with 23% amount of alumina(counting as Al2O3) was more than 120 hours,about 30 times longer than pure PI film in the condition of 90 MV/m,50 Hz,0.1 mm air gap on the rod-plate electrode system which was made by us.

