Automatic electrical controls for household and similar. Part 2-8. Particular requirements for electrically operated water valves, including mechanical requirements
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
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