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| открытая база; база открытых множеств | |||
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开底 : 63 phrases in 10 subjects |
| Drilling | 1 |
| Electronics | 13 |
| Environment | 2 |
| General | 17 |
| Leather | 1 |
| Mining | 3 |
| Nautical | 4 |
| Oil processing plants | 3 |
| Rail transport | 2 |
| Technology | 17 |
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