 |
| perforación: 283 phrases in 28 subjects |
| Agriculture | 5 |
| Automated equipment | 3 |
| Chemistry | 8 |
| Coal | 26 |
| Commerce | 1 |
| Communications | 10 |
| Construction | 12 |
| Cultural studies | 1 |
| Earth sciences | 13 |
| Economy | 3 |
| Electronics | 16 |
| Energy industry | 2 |
| Environment | 10 |
| General | 6 |
| Health care | 7 |
| Industry | 13 |
| Information technology | 36 |
| Life sciences | 6 |
| Materials science | 3 |
| Mechanic engineering | 11 |
| Mechanics | 1 |
| Medical | 5 |
| Metallurgy | 19 |
| Natural sciences | 1 |
| Oil / petroleum | 40 |
| Patents | 1 |
| Transport | 17 |
| Work flow | 7 |