 |
| 扩音器: 72 phrases in 16 subjects |
| Advertising | 1 |
| Air defense | 1 |
| Aviation | 3 |
| Business | 1 |
| Electronics | 5 |
| General | 7 |
| Information technology | 1 |
| Metallurgy | 1 |
| Multimedia | 1 |
| Nautical | 1 |
| Otorhinolaryngology | 1 |
| Shipbuilding | 31 |
| Space | 3 |
| Technology | 13 |
| Telecommunications | 1 |
| Wind Energy | 1 |