Medical electrical equipment. Positron emission tomographs together with X-ray equipment for computed tomography. Technical requirements for governmental purchases
State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 5. Equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz
Corrosion of metals and alloys. Corrosivity of atmospheres. Methods for the determination of corrosion rate of standard specimens used for the evaluation of corrosivity
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