electric main
4.For status at present and development orientation of chinese electric power private telecommunication network is briefed,main advantages of ATM technique are explained. For development require of electric power WAN B-ISDN is expounded,main technical performance and requires of its backbone network,ATM cxchange,ATM connecting in and edge equipment are proposed.
9.Abstract: This paper not only dissertates the system structure and manufacture process of boiler ash-blowing program control equipment in thermo-electric power plants, but also presents hardware make-up, main functions and software design of microcomputer PLC control system.
10.Electric-field intensity acting on dielectric and the operation temperature of dielectric are the main factors stressing on the power capac itors.

