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Centrifugal pumps for petroleum, petrochemical and natural gas industries. General technical requirements
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Noise of machines. Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
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State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring mass concentration of dissolving in water gasses (oxygen, hydrogen)
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Feeds. Methods for determination of dry matter content
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Welded joints of polyethylene, polypropylene and polyvinyl chloride. Main types, constructive elements and dimensions
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