 |
| drain system: 104 phrases in 26 subjects |
| Apollo-Soyuz | 2 |
| Astronautics | 1 |
| Aviation | 1 |
| Caspian | 4 |
| Construction | 2 |
| Ecology | 1 |
| Electronics | 12 |
| Energy industry | 22 |
| Environment | 1 |
| General | 4 |
| Greenhouse technology | 1 |
| Karachaganak | 1 |
| Makarov | 1 |
| Nautical | 8 |
| Nuclear and fusion power | 3 |
| Oil / petroleum | 5 |
| Oil and gas | 9 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Production | 1 |
| Sakhalin | 5 |
| Sakhalin R | 1 |
| Shipbuilding | 2 |
| Technology | 10 |
| Torpedoes | 1 |
| Weapons of mass destruction | 4 |