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servo system : 23 phrases in 11 subjects |
| Automobiles | 4 |
| Communications | 1 |
| Computer numerical control | 1 |
| General | 1 |
| Information technology | 2 |
| Measuring instruments | 2 |
| Mechanic engineering | 3 |
| Microelectronics | 3 |
| Optics branch of physics | 2 |
| Technology | 3 |
| Transport | 1 |