| |||
| 电码发报机 | |||
| 发报机 | |||
|
code transmitter : 13 phrases in 7 subjects |
| Air defense | 1 |
| Automobiles | 2 |
| Electronics | 4 |
| General | 1 |
| Information technology | 2 |
| Space | 1 |
| Technology | 2 |
| |||
| 电码发报机 | |||
| 发报机 | |||
|
code transmitter : 13 phrases in 7 subjects |
| Air defense | 1 |
| Automobiles | 2 |
| Electronics | 4 |
| General | 1 |
| Information technology | 2 |
| Space | 1 |
| Technology | 2 |