Engineering 72 Research 52 Telecommunication 42 Biotechnology 41 Information technology 39 Materials 39 Nanotechnology 38 আরও ... Technology 38 Management 36 Food 34 Périodiques 33 Electronics 32 Electrical engineering 30 Mechanical engineering 29 Zeitschrift 29 Food industry and trade 28 Civil engineering 27 Equipment and supplies 24 Materials science 24 Environmental aspects 23 Building 22 Manufacturing processes 21 Production management 21 Operations research 20 Production engineering 20 Technological innovations 20 Automobiles 19 Nutrition 19 Power resources 19 Renewable energy sources 18 কম ...