Alloys and foundry alloys of rare metals. X-ray fluorescence method for determination of zirconium, molybdenum, tungsten and tantalum in niobium alloys
Photovoltaic module. Performance testing and energy rating. Part 2. Determination of spectral sensitivity, characteristics dependence on the incidence angle and coefficients for calculating the operating temperature
Electromagnetic compatibility of technical equipment. Limitation of voltage fluctuation and flicker, caused by technical equipment with rated current greater than 75 A connected to low-voltage power supply systems. Limits and test methods
