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| длина периода (напр., дроби) | |||
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period length : 13 phrases in 10 subjects |
| Agriculture | 1 |
| Electronics | 2 |
| Geophysics | 1 |
| Mass media | 2 |
| Mathematics | 1 |
| Mechanics | 1 |
| Painting | 1 |
| Programming | 1 |
| Technology | 1 |
| Water resources | 2 |
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