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contacto : 674 phrases in 41 subjects |
| Agriculture | 5 |
| Antennas and waveguides | 2 |
| Astronautics | 1 |
| Chemistry | 41 |
| Commerce | 2 |
| Communications | 14 |
| Construction | 8 |
| Earth sciences | 30 |
| Economics | 1 |
| Electric machinery | 15 |
| Electrical engineering | 7 |
| Electronics | 238 |
| Environment | 2 |
| Finances | 4 |
| Food industry | 2 |
| General | 9 |
| Health care | 14 |
| Human rights activism | 1 |
| Immigration and citizenship | 3 |
| Industry | 26 |
| Information technology | 23 |
| Insurance | 2 |
| Isolation | 4 |
| Labor law | 2 |
| Law | 3 |
| Life sciences | 2 |
| Lighting other than cinema | 1 |
| Magnetics | 1 |
| Materials science | 3 |
| Mechanic engineering | 45 |
| Medical | 11 |
| Metallurgy | 19 |
| Microsoft | 45 |
| Natural sciences | 8 |
| Patents | 5 |
| Politics | 3 |
| Power system protection | 28 |
| Social science | 1 |
| Statistics | 2 |
| Technology | 15 |
| Transport | 26 |