 |
| retroceso: 184 phrases in 31 subjects |
| Acridology | 2 |
| Agriculture | 1 |
| Antennas and waveguides | 1 |
| Chemistry | 11 |
| Communications | 6 |
| Construction | 1 |
| Criminal law | 4 |
| Earth sciences | 7 |
| Electronics | 19 |
| Environment | 1 |
| General | 7 |
| Health care | 2 |
| Industry | 4 |
| Information technology | 5 |
| Labor law | 1 |
| Law | 3 |
| Life sciences | 7 |
| Magnetics | 1 |
| Mathematics | 1 |
| Mechanic engineering | 17 |
| Medical | 3 |
| Metallurgy | 5 |
| Microsoft | 1 |
| Nuclear physics | 2 |
| Patents | 3 |
| Pharmacy and pharmacology | 1 |
| Satellite communications | 4 |
| Statistics | 3 |
| Technology | 1 |
| Textile industry | 3 |
| Transport | 57 |