Machine-tools Numerical control 348 Metal-cutting tools 185 Machining 180 Metal-cutting 150 Programming 123 Surface roughness 88 Materials 65 Machine-shop practice 60 Automation 55 Milling-machines 46 Design and construction 37 Vibration 34 Manufacturing processes 25 Machine design 23 Design 18 Measurement 18 Titanium alloys 16 Industrial equipment 15 Monitoring 15 Metal-working lubricants 14 Milling machinery 14 Cutting machines 12 Production engineering 12 Computer-aided design 11 Equipment and supplies 10 Metal-cutting tools industry 10 Miling machinery 10 Computer programs 9 Data processing 9