 |
| 上升时间: 38 phrases in 18 subjects |
| Air defense | 3 |
| Artificial intelligence | 1 |
| Automatic control | 1 |
| Automobiles | 1 |
| Chemistry | 1 |
| Computers | 2 |
| Earth sciences | 1 |
| Electronics | 10 |
| Finances | 1 |
| Information technology | 1 |
| Metallurgy | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 2 |
| Otorhinolaryngology | 1 |
| Space | 2 |
| Submarines | 1 |
| Technology | 6 |
| Telecommunications | 2 |