Russian standards PDF
Basic requirements for interchangeability. Cylindrical fine-pitch gears. Tolerances
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Basic requirements for interchangeability. Cylindrical small module worm pairs. Tolerances
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Safety of household and similar electrical appliances. Part 2-77. Particular requirements for pedestrian controlled mains-operated lawnmowers
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Printed boards. Part 4. Rigid multilayer printed boards with interlayer connections. Sectional specification
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Medical suction equipment. Part 3. Suction equipment powered from a vacuum or pressure source. General technical requirements and test methods
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Photography. Medical radiographic cassettes/screens/films and hard-copy imaging films. Dimensions and technical requirements
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