Yttrium, lanthanum, ytterbium, lutetium and their oxides. Chemical-spectral method of determination of impurities of vanadium, tungsten, iron, cobalt, manganese, copper, molybdenum, nickel, niobium, lead, tantalum, titanium and chromium
The system of ensuring the uniformity of measurements at the enterprises of the aviation industry. The order of carrying out of works on metrological support of test equipment
