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| 群码; 组码 | |||
| 组符号; 分组码 | |||
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group code : 28 phrases in 12 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 3 |
| Cryptography | 1 |
| Economy | 1 |
| Electronics | 3 |
| Information technology | 3 |
| Management | 1 |
| Multimedia | 1 |
| Space | 1 |
| Technology | 6 |
| Telecommunications | 6 |
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