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| 资料分发系统 | |||
| 数据分配系统 | |||
| 数据分发系统 | |||
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data distribution system : 24 phrases in 6 subjects |
| Air defense | 3 |
| Aviation | 3 |
| Earth sciences | 3 |
| Electronics | 8 |
| Space | 6 |
| Telecommunications | 1 |
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