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| 跟 踪 系统: 630 phrases in 38 subjects |
| Agriculture | 2 |
| Air defense | 38 |
| Animal husbandry | 1 |
| Artificial intelligence | 1 |
| Automated equipment | 1 |
| Automobiles | 3 |
| Aviation | 143 |
| Business | 3 |
| Cartography | 2 |
| Communications | 1 |
| Compressors | 1 |
| Drilling | 2 |
| Earth sciences | 19 |
| Electronics | 90 |
| Finances | 2 |
| Fishery fishing industry | 2 |
| General | 13 |
| Geology | 1 |
| Geophysics | 5 |
| Information technology | 5 |
| International Monetary Fund | 6 |
| Logistics | 1 |
| Management | 1 |
| Mechanics | 1 |
| Metallurgy | 4 |
| Missiles | 5 |
| Nautical | 1 |
| Navigation | 1 |
| Oil / petroleum | 6 |
| Project management | 1 |
| Radio | 1 |
| Refrigeration | 1 |
| Shipbuilding | 3 |
| Space | 170 |
| Steel production | 1 |
| Technology | 83 |
| Telecommunications | 2 |
| United States | 7 |
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