 |
| железо: 868 phrases in 36 subjects |
| Agrochemistry | 1 |
| Automated equipment | 2 |
| Automobiles | 1 |
| Aviation | 7 |
| Chemistry | 23 |
| Construction | 5 |
| Electricity | 1 |
| Electrochemistry | 1 |
| Electronics | 66 |
| Figurative | 1 |
| Figure of speech | 2 |
| Food service and catering | 5 |
| General | 323 |
| Geochemistry | 9 |
| Geology | 11 |
| Gold mining | 2 |
| Ichthyology | 1 |
| Inorganic chemistry | 1 |
| Literally | 2 |
| Mechanic engineering | 1 |
| Medical | 14 |
| Metallurgy | 23 |
| Nautical | 12 |
| Oil and gas | 5 |
| Oil processing plants | 9 |
| Pharmacology | 1 |
| Proverb | 5 |
| Radio | 5 |
| Rail transport | 1 |
| Road works | 7 |
| Shipbuilding | 2 |
| Sports | 1 |
| Stamping | 1 |
| Technology | 314 |
| Verbatim | 1 |
| Veterinary medicine | 2 |