Air transport. Safety management system of helicopter activity. Risk management. The standard guides on safety management system for teaching and training. General provisions
State system for ensuring the uniformity of measurements. Standard reference data. Parahydrogen, liquid and gaseous. Density, enthalpy, entropy, isochoric, isobaric heat capacities and speed of sound at temperatures from 14 K up to 1000 K and pressures up to 100 MPa