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
United power system and isolated power systems. Relay protection and automation. Automatic emergency control of modes of power systems. Pulse and long-term unloading of turbines. General requirements and test procedure
€10
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