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| 三千 news1 nf03 | |||
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tres : 51 phrases in 8 subjects |
| Automatic control | 1 |
| Cables and cable production | 1 |
| Electricity generation | 2 |
| General | 42 |
| Radio | 2 |
| Rail transport | 1 |
| Satellite communications | 1 |
| Superconductivity | 1 |
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