State requirements to advanced training and retraining of the personnel on the state enterprises of the State Committee of the Republic of Uzbekistan on Geology and Mineral Resources
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