State system for ensuring the uniformity of measurements. Thermal converters of industrial thermocouple thermometers. Methods and means of verification
Acoustics. Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means measuring phase shift angle within frequency range from 8,2 to 12 GHz
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