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| переменная система | |||
| système variable: 21 phrases in 10 subjects |
| Automated equipment | 2 |
| Aviation | 3 |
| Computers | 1 |
| Construction | 1 |
| Electronics | 2 |
| General | 1 |
| Information technology | 2 |
| Programming | 5 |
| Rail transport | 1 |
| Technology | 3 |
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