|
release mechanism : 64 phrases in 22 subjects |
| Armored vehicles | 5 |
| Astronautics | 2 |
| Automated equipment | 4 |
| Automobiles | 1 |
| Cycling other than sport | 5 |
| Drilling | 2 |
| Electrical engineering | 1 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Military | 6 |
| Nautical | 3 |
| Non-destructive testing | 1 |
| Oil and gas | 1 |
| Switches | 9 |
| Technology | 7 |
| Telecommunications | 1 |
| Torpedoes | 2 |
| Transport | 5 |
| Weapons and gunsmithing | 4 |