 |
| durcissement: 232 phrases in 29 subjects |
| Agriculture | 6 |
| Building materials | 1 |
| Chemistry | 19 |
| Coal | 1 |
| Construction | 51 |
| Cultural studies | 2 |
| Earth sciences | 3 |
| Electronics | 1 |
| Environment | 3 |
| Finances | 6 |
| Forestry | 2 |
| General | 10 |
| Health care | 2 |
| Industry | 16 |
| International Monetary Fund | 9 |
| Isolation | 1 |
| Labor law | 1 |
| Life sciences | 5 |
| Mechanics | 1 |
| Medical | 3 |
| Medical appliances | 4 |
| Metallurgy | 64 |
| Nuclear physics | 2 |
| Photography | 1 |
| Plastics | 1 |
| Resins | 1 |
| Technology | 11 |
| Transport | 3 |
| Радиоактивное излучение | 2 |