 |
| piston rod: 93 phrases in 23 subjects |
| Armored vehicles | 3 |
| Artillery | 2 |
| Automated equipment | 2 |
| Automobiles | 7 |
| Aviation | 1 |
| Construction | 1 |
| General | 6 |
| Makarov | 3 |
| Mechanic engineering | 4 |
| Mechanics | 2 |
| Medical | 1 |
| Military | 2 |
| Nautical | 4 |
| Oil / petroleum | 3 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Shipbuilding | 4 |
| Technology | 30 |
| Transport | 4 |
| Weapons and gunsmithing | 8 |