 |
| extinction: 274 phrases in 46 subjects |
| Agriculture | 22 |
| Antennas and waveguides | 1 |
| Astronautics | 1 |
| Astronomy | 15 |
| Chemistry | 16 |
| Coal | 7 |
| Commerce | 2 |
| Communications | 1 |
| Construction | 1 |
| Customs | 1 |
| Earth sciences | 7 |
| Economy | 1 |
| Electric motors | 1 |
| Electric traction | 1 |
| Electricity generation | 1 |
| Electronics | 27 |
| Energy industry | 3 |
| Environment | 10 |
| Finances | 1 |
| Forestry | 1 |
| General | 25 |
| Health care | 2 |
| Industry | 4 |
| Information technology | 1 |
| Law | 22 |
| Life sciences | 1 |
| Marketing | 1 |
| Materials science | 44 |
| Measuring instruments | 4 |
| Mechanic engineering | 1 |
| Medical | 3 |
| Metallurgy | 8 |
| Microsoft | 1 |
| Mineral products | 3 |
| Municipal planning | 1 |
| Name of organization | 1 |
| Natural resourses and wildlife conservation | 3 |
| Natural sciences | 1 |
| Patents | 2 |
| Physical sciences | 1 |
| Politics | 1 |
| Power electronics | 4 |
| Power system protection | 1 |
| Technology | 2 |
| Transformers | 2 |
| Transport | 15 |