|
spring- mounted : 16 phrases in 9 subjects |
| Automated equipment | 1 |
| Electrical engineering | 1 |
| General | 1 |
| Gyroscopes | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oilfields | 1 |
| Rail transport | 3 |
| Technology | 6 |
|
spring- mounted : 16 phrases in 9 subjects |
| Automated equipment | 1 |
| Electrical engineering | 1 |
| General | 1 |
| Gyroscopes | 1 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oilfields | 1 |
| Rail transport | 3 |
| Technology | 6 |