Russian standards
Sound broadcasting channels. Basic quality parameters. Methods for measuring
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Digital video broadcasting. Service Information (SI). General technical requirements
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Means of computing technique. Keyboards. Layout of keys and characters, functions of function keys
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Data transmission system signal conversion equipment for unswitched voice frequency channels, using compression information cod
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System for multiplexing sound channel television. Basic parameters
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Gaseous discharge pulsed and continuous sources of high-intensity optical radiation. Methods of electrical and radiation parameters measuring
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