 |
| piping system: 70 phrases in 25 subjects |
| Astronautics | 1 |
| Aviation | 2 |
| Construction | 8 |
| Electrical engineering | 1 |
| Electronics | 2 |
| Energy industry | 9 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Hydraulic engineering | 1 |
| Makarov | 2 |
| Mechanics | 1 |
| Medical appliances | 1 |
| Metallurgy | 2 |
| Nautical | 4 |
| Oil / petroleum | 6 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Production | 1 |
| Refrigeration | 1 |
| Sakhalin | 2 |
| Solar power | 1 |
| Technology | 11 |
| Thermal Energy | 3 |
| Thermal engineering | 5 |
| Weapons of mass destruction | 1 |