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| advanced data system | |||
| automated data system | |||
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先 进数据系统 : 26 phrases in 7 subjects |
| Air defense | 2 |
| Aviation | 10 |
| Electronics | 7 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 1 |
| United States | 1 |
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