 |
| 落差: 85 phrases in 19 subjects |
| Automated equipment | 1 |
| Aviation | 3 |
| Business | 1 |
| Construction | 1 |
| Electronics | 3 |
| General | 25 |
| Geography | 1 |
| Geology | 4 |
| Hydrography | 3 |
| Hydrology | 1 |
| Mathematics | 1 |
| Melioration | 1 |
| Nautical | 1 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oil processing plants | 2 |
| Statistics | 2 |
| Technology | 31 |
| Water supply | 1 |