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| |||
| continuous code | |||
| joined mark; joint mark | |||
| 连码: 46 phrases in 13 subjects |
| Air defense | 2 |
| Automobiles | 1 |
| Business | 3 |
| Company name | 1 |
| Electronics | 7 |
| Geography | 1 |
| Information technology | 5 |
| Librarianship | 1 |
| Mathematics | 1 |
| Space | 2 |
| Steel production | 1 |
| Technology | 13 |
| Telecommunications | 8 |
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