State system for ensuring the uniformity of measurements. The volume of natural gas. Method of error calculations in measurements of natural gas volume at reference conditions. Basic principles
State system for ensuring the uniformity of measurements. Ultrasonic power in liquids. General requirements to measuring methods in the frequency range 0,5 to 25 MHz
Petroleum, petrochemical and natural gas industries. Sector-specific quality management systems. Requirements for product and service supply organizations
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