 |
| 封存: 97 phrases in 26 subjects |
| Astronautics | 1 |
| Aviation | 1 |
| Banking | 1 |
| Bioenergy | 2 |
| Business | 4 |
| Computers | 1 |
| Construction | 1 |
| Drilling | 2 |
| Electronics | 9 |
| Finances | 1 |
| General | 24 |
| Geology | 3 |
| Information technology | 2 |
| International Monetary Fund | 1 |
| Military | 1 |
| Nautical | 1 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 4 |
| Oil and gas technology | 2 |
| Oil processing plants | 4 |
| Oilfields | 4 |
| Rail transport | 1 |
| Technology | 22 |
| Thermal engineering | 1 |
| United Nations | 1 |