 |
| |||
| ring support | |||
| circular lining | |||
| крепление кольцами: 33 phrases in 15 subjects |
| Artillery | 1 |
| Astronautics | 2 |
| Aviation | 2 |
| Electronics | 3 |
| Forestry | 2 |
| General | 1 |
| Gyroscopes | 1 |
| Mechanic engineering | 2 |
| Military | 1 |
| Mining | 6 |
| Polygraphy | 1 |
| Technology | 5 |
| Thermal engineering | 1 |
| Transport | 2 |
| Weapons and gunsmithing | 3 |