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| Untersuchungsmodell n | |||
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модель исследования : 18 phrases in 10 subjects |
| Aerodynamics | 4 |
| Automated equipment | 1 |
| Aviation | 3 |
| Computers | 2 |
| Construction | 1 |
| Machine components | 1 |
| Military | 1 |
| Missiles | 1 |
| Technology | 1 |
| Water supply | 3 |
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