English-Serbian dictionary   Subject Number of entries Accumulators 245 Aviation 1 Cables and cable production 316 Computer networks 280 Ecology 60 Economics 7.072 Electric machinery 270 Electric motors 882 Electrical engineering 348 Electricity generation 697 Electronics 868 Isolation 165 Lighting other than cinema 94 Magnetics 284 Mammals 58 Mathematics 2.682 Metrology 171 Microsoft 2.139 Ornithology 60 Patents 110 Power electronics 265 Power lines 268 Power system protection 286 Printed circuit boards 37 Radio 1 Risk Management 59 Statistics 37 Thermal Energy 712 Transformers 278 Ultrasound 40 Vacuum tubes 771 Total: 19.556