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control valve: 100 phrase in 20 subjects |
Aerohydrodynamics | 1 |
Agriculture | 4 |
Automated equipment | 7 |
Automobiles | 9 |
Aviation | 1 |
Chemistry | 2 |
Computer numerical control | 1 |
Earth sciences | 21 |
Environment | 1 |
Food industry | 1 |
General | 1 |
Industry | 1 |
Information technology | 1 |
Materials science | 3 |
Measuring instruments | 2 |
Mechanic engineering | 19 |
Metallurgy | 1 |
Technology | 16 |
Transport | 6 |
Water resources | 2 |