State system for ensuring the uniformity of measurements. Medical diagnostic ultrasonic equipment. Portable foetal heartbeat detectors. General requirements for the declaration of parameters and measurement methods
Switches for household and similar fixed electrical installations. Part 2-5. Particular requirements. Switches and related accessories for use in home and building electronic systems
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means measuring radiant flux 1x10 in minus 6 degree to 1x10 in minus 2 degree W in the wavelength range of 0,4 - 1,4 um
