State system for ensuring the uniformity of measurements. Standard reference data. n-Undecane. Thermophysical properties (density, heat capacity, enthalpy, entropy, sound velocity, thermal conductivity and viscosity coefficients) for the temperature range from the triple point to 700К at pressures up to 100 MPa
State system of ensuring the unity of measurements. Standard time and frequency signals radiated by specialized radio stations of the state time service. Main parameters
