 |
|
gear system : 57 phrases in 14 subjects |
| Air defense | 2 |
| Armored vehicles | 2 |
| Astronautics | 5 |
| Automated equipment | 4 |
| Automobiles | 3 |
| Aviation | 6 |
| Gyroscopes | 1 |
| Machinery and mechanisms | 5 |
| Makarov | 1 |
| Mechanic engineering | 7 |
| Military | 2 |
| Nautical | 1 |
| Space | 10 |
| Technology | 8 |