 |
| 有效面积: 55 phrases in 16 subjects |
| Astronautics | 1 |
| Aviation | 1 |
| Construction | 1 |
| Economy | 2 |
| Electronics | 6 |
| General | 15 |
| Geology | 1 |
| Hydrology | 1 |
| Medical | 1 |
| Metallurgy | 1 |
| Military | 3 |
| Nautical | 3 |
| Oil and gas | 1 |
| Radiolocation | 2 |
| Seismology | 1 |
| Technology | 15 |
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