 |
| предохранительный механизм: 51 phrases in 12 subjects |
| Agriculture | 1 |
| Astronautics | 5 |
| Construction | 1 |
| Firefighting and fire-control systems | 1 |
| Makarov | 1 |
| Metallurgy | 1 |
| Military | 27 |
| Missiles | 3 |
| Technology | 7 |
| Textile industry | 1 |
| Thermal engineering | 1 |
| Wood processing | 2 |