 |
|
piston spring : 25 phrases in 10 subjects |
| Armored vehicles | 4 |
| Artillery | 1 |
| Automated equipment | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Hydraulics | 1 |
| Military | 1 |
| Oilfields | 1 |
| Technology | 12 |
| Weapons and gunsmithing | 2 |
|
|
piston spring : 25 phrases in 10 subjects |
| Armored vehicles | 4 |
| Artillery | 1 |
| Automated equipment | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Hydraulics | 1 |
| Military | 1 |
| Oilfields | 1 |
| Technology | 12 |
| Weapons and gunsmithing | 2 |