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| неизвестный; невыясненный; неустановленный; неопознанный | |||
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不 : 187 phrases in 11 subjects |
| Biology | 4 |
| Chemistry | 3 |
| Construction | 1 |
| Electronics | 8 |
| Geology | 4 |
| Mathematics | 7 |
| Metallurgy | 2 |
| Pulp and paper industry | 1 |
| Resins | 1 |
| Technology | 152 |
| Textile industry | 4 |
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