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Oscillator, modulator and regulation tubes with anode dissipated power above 25 W. Methods of measurements of cathode emission
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12,7 mm 9-track magnetic tapes with the density of recording of 32 flux changes per mm. Technical requirements
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Information technology equipment. Safety. Part 1. General requirements
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Photomultipliers. Measuring method of nonlinearity of light characteristic in static mode
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Programmable controllers. General and functional characteristics
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