 |
| gravity tank: 33 phrases in 20 subjects |
| Astronautics | 1 |
| Automobiles | 4 |
| Construction | 1 |
| Ecology | 2 |
| Makarov | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Military | 1 |
| Mining | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Oilfields | 2 |
| Polymers | 1 |
| Road works | 1 |
| Shipbuilding | 3 |
| Technology | 3 |
| Textile industry | 1 |
| Thermal engineering | 2 |
| Transport | 1 |