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可分系统 : 39 phrases in 15 subjects |
| Air defense | 1 |
| Aviation | 7 |
| Business | 5 |
| Drilling | 1 |
| Earth sciences | 1 |
| Economy | 2 |
| Electronics | 8 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Navigation | 1 |
| Project management | 2 |
| Refrigeration | 1 |
| Space | 4 |
| Technology | 2 |
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