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| système de "feed-back" | |||
| система обратной связи: 36 phrases in 10 subjects |
| Astronautics | 3 |
| Automated equipment | 6 |
| Aviation | 6 |
| Chemistry | 2 |
| Computers | 2 |
| Corporate governance | 1 |
| Information technology | 3 |
| Mechanic engineering | 1 |
| Medical appliances | 2 |
| Technology | 10 |