The interelectrode dielectric adopts the polypropylene film with surfacecoarsening which is easy to impregnate so as to enhance the reliability of high-capacity capacitor.
极间介质为易于浸渍的表面粗化聚丙薄膜，特别提高了大容量电容器的可靠性。
2
A pretreatment process before the surface of the glass fiber is plated with tin and nickel mainly comprises the following steps of: deoiling, coarsening, sensibilizing, activating, and the like.