Gas dynamics. Basic letter symbols
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State system of ensuring the uniformity of measurements. Units of physical quantities
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Letter symbols to be used in electrical technology. Part 1. General
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Letter symbols to be used in electrical technology. Part 2. Telecommunications and electronics
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Letter symbols to be used in electrical technology. Part 4. Rotating electric machines
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Letter symbols to be used in electrical technology. Part 7. Power generation, transmission and distribution
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Thermal insulation. Physical quantities and definitions
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State system for ensuring the uniformity of measurements. Geophysical well logging and petrophysical study of rock, fluids and gas samples. Units of measured quantities
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Air quality. General aspects. Units of measurement
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Metrology. Physical units.
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Symbols of conditional letter values
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Departmental system of product quality control. Measurement assurance. Physical quantity units.
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