Transmission systems of audio and/or video and related signals using infra-red radiation. Part 7. Digital audio signals for conference and similar applications
State system for the uniformity of measurements. State verification schedule for means measuring radionuclide activity, specific radioactivity, flux and flux density of б-, в-particles and photons of radionuclide sources
State system for ensuring the uniformity of measurements. Mass of hydrocarbon condensate, liquefied hydrocarbon gas and long distillate of light hydrocarbons. General requirement for procedure (methods) of measurements
