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| Rückmeldesystem n | |||
| Rückkopplungsystem n | |||
| система обратной связи: 27 phrases in 12 subjects |
| Aerodynamics | 1 |
| Automated equipment | 9 |
| Aviation | 2 |
| Computers | 3 |
| Economy | 1 |
| Electronics | 3 |
| General | 1 |
| Mathematics | 1 |
| Mechanic engineering | 1 |
| Medical appliances | 3 |
| Nuclear and fusion power | 1 |
| Quantum electronics | 1 |