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| duplex computer | |||
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| duplex computer | |||
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双 计算机 : 18 phrases in 8 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Electronics | 4 |
| Information technology | 2 |
| Project management | 1 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 5 |
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