 |
| perturbación: 143 phrases in 34 subjects |
| Agriculture | 1 |
| Automatic control | 4 |
| Aviation | 3 |
| Chemistry | 1 |
| Climatology | 2 |
| Communications | 13 |
| Computer numerical control | 4 |
| Earth sciences | 7 |
| Economy | 3 |
| Electricity generation | 1 |
| Electronics | 10 |
| Energy industry | 1 |
| Environment | 8 |
| Finances | 5 |
| Forestry | 1 |
| General | 4 |
| Geology | 1 |
| Health care | 4 |
| International Monetary Fund | 2 |
| Labor law | 1 |
| Law | 5 |
| Life sciences | 10 |
| Magnetics | 17 |
| Mathematics | 4 |
| Medical | 2 |
| Metallurgy | 1 |
| Meteorology | 9 |
| Natural sciences | 1 |
| Radio | 1 |
| Statistics | 5 |
| Technology | 8 |
| Television | 1 |
| Transport | 1 |
| United Nations | 2 |