Helium-4 liquid and gaseous. Density, enthalpy, entropy, isochoric and isobaric heat capacities at temperatures from 2.5 K to 500 K and pressures up to 100 Mpa
State system for ensuring the uniformity of measurements. State service of standard reference data on physical constants and properties of substances and materials. Standard reference data for atomic energy service. Basic principles
Explosive atmospheres. Rules of competence assessment of the personnel performing installation, maintenance, repair and overhaul of the electrical installations intended for use in explosive atmospheres
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