 |
| 对称性: 122 phrases in 20 subjects |
| Aerodynamics | 1 |
| Antennas and waveguides | 1 |
| Automated equipment | 1 |
| Biology | 2 |
| Business | 1 |
| Chemistry | 3 |
| Electronics | 11 |
| General | 28 |
| Geology | 1 |
| Information technology | 1 |
| International Monetary Fund | 2 |
| Mathematics | 11 |
| Medical | 18 |
| Military | 1 |
| Nautical | 1 |
| Oil and gas | 1 |
| Oil processing plants | 3 |
| Physics | 2 |
| Technology | 31 |
| Telecommunications | 2 |