Еlectromagnetic compatibility of technical equipment. Signalling on low-voltage electrical installations. Emission levels, frequency bands and electromagnetic disturbance levels
Samarium, europium, gadolinium, terbium, holmium, erbium, thulium, ytterbium, lutecium and their oxides. Spectral method of determination of impurities in oxides of rare-earth elements
State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by means of orifice instruments. Part 3. Nozzles and Venturi nozzles. Technical requirements
