 |
| |||
| 频率测定 | |||
| 频率测量 | |||
| 测频; 频率测定［量］ | |||
| frequency measurement: 56 phrases in 12 subjects |
| Air defense | 11 |
| Artificial intelligence | 1 |
| Aviation | 7 |
| Electronics | 7 |
| Geophysics | 2 |
| Information technology | 1 |
| Mechanics | 1 |
| Project management | 1 |
| Refrigeration | 1 |
| Shipbuilding | 5 |
| Space | 12 |
| Technology | 7 |