ESRI company is standard of GIS software domain, which product – ArcEngine not only be provided with vigoroso expansibility, but also With limitless expansibility.
According to the tractility of Silicon steel sheet,a new processing technics of cutting the narrow-yoke sheet into punching piece and rolling it into motor core was proposed here.
"Put differently , language is pliantly expansive so as to allow me to objectify a great variety of experiences coming my way in the course of my life."
In this scheme we put forward the concept of matrix pool on which our key predistribution scheme is upbuilt,and encrpytion scheme is introduced into the process of key transfer.