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| 标高标志: 23 phrases in 12 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Automobiles | 2 |
| Aviation | 1 |
| Electronics | 3 |
| Engineering geology | 1 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 9 |
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