Prefabricated concrete and reinforced concrete constructions and products. Marking
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Chemical products. Designation for degree of purity
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Electrotechnics. Letter symbols for common quantities
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Filled transport container. Designation of testing components
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Refractories. Letter symbols of quantities used in tests
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Refractories. Letter symbols used in tests
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Gas dynamics. Basic letter symbols
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Hydraulic fluid power. Lower designation of connecting ports of hydraulic equipment
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National conformity mark. Form, sizes and technical requirements
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Surface active agents. Scientific classification
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Rolling bearings. Symbols for physical quantities
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