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| 编码系统; 编码方式 | |||
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coded system : 28 phrases in 9 subjects |
| Air defense | 3 |
| Architecture | 1 |
| Aviation | 5 |
| Business | 1 |
| Electronics | 4 |
| General | 1 |
| Space | 3 |
| Technology | 5 |
| Telecommunications | 5 |
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