State system for ensuring the uniformity of measurements. State special standard and state verification schedule for means measuring phase shift angle with in the frequency range from 25,95 to 37,50 GHz
United power system and isolated power systems. Electrical substations. Automated process control systems. Conditions for creating. Norms and requirements
External lighting and signalling devices for mechanic vehicles, trailers and semitrailers. Light and colour characteristics. Norms and methods of tests
