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| 信令点编码 | |||
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point code : 26 phrases in 9 subjects |
| Aviation | 2 |
| Business | 1 |
| Communications | 1 |
| Computer networks | 1 |
| Electronics | 8 |
| Information technology | 5 |
| Space | 1 |
| Technology | 3 |
| Telecommunications | 4 |
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