State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. Measuring the flow and quantity of liquids and gases by differential pressure method. Allowance for change in the inner diameter of the measuring pipe during gas flow rate measurement. Replaces RD Uz 51-059-97
State system for ensuring the uniformity of measurements of the Republic of Uzbekistan. The procedure for conducting the operational, static and arbitration control of the results of quantitative chemical analyzes of geological samples
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