Petrol filling stations. Part 4. Safety and environmental requirements for construction and performance of swivels for use on metering pumps and dispensers
State system for ensuring the uniformity of measurements. Standard reference data. Orthohydrogen, liquid and gaseous. Density, enthalpy, entropy, isochoric, isobaric heat capacities and speed of sound at temperatures from 15 K up to 1000 K and pressures up to 100 MPa
