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开 发 能力 : 22 phrases in 12 subjects |
| Air defense | 2 |
| Aviation | 6 |
| Commerce | 1 |
| Electronics | 1 |
| Finances | 1 |
| Management | 1 |
| Metallurgy | 4 |
| Name of organization | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 1 |
| United States | 1 |
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