 |
| hard steel: 51 phrases in 18 subjects |
| Armored vehicles | 1 |
| Artillery | 2 |
| Automated equipment | 1 |
| Automobiles | 1 |
| Bridge construction | 1 |
| Construction | 6 |
| General | 1 |
| Makarov | 5 |
| Mechanic engineering | 7 |
| Mechanics | 1 |
| Metallurgy | 4 |
| Military | 3 |
| Nautical | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Technology | 10 |
| Transport | 1 |
| Weapons and gunsmithing | 3 |