 |
| |||
| 工作信道; 操作信道 | |||
| operation channel: 12 phrases in 7 subjects |
| Aviation | 1 |
| Electronics | 4 |
| Information technology | 3 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
| Telecommunications | 1 |
|
| |||
| 工作信道; 操作信道 | |||
| operation channel: 12 phrases in 7 subjects |
| Aviation | 1 |
| Electronics | 4 |
| Information technology | 3 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
| Telecommunications | 1 |