State system for ensuring the uniformity of measurements. National standard. Standard reference data. Copper-zinc alloys. Temperature coefficient of linear expansion and electrical resistivity for the temperature range from 300 K to 2/3 temperature of melting
Secondary cells and batteries containing alkaline or other non-acid electrolytes. Nickel-cadmium prismatic secondary single cells with partial recombination
State system for insuring the uniformity of measurements. Secondary standards of units of mass and volumetric flow rate, mass and volume fluid. General metrological and technical requirements
