 |
| |||
| radio communication | |||
| radio communication: 17 phrases in 6 subjects |
| Aviation | 3 |
| Communications | 10 |
| Construction | 1 |
| Fish farming pisciculture | 1 |
| General | 1 |
| Research and development | 1 |
|
| |||
| radio communication | |||
| radio communication: 17 phrases in 6 subjects |
| Aviation | 3 |
| Communications | 10 |
| Construction | 1 |
| Fish farming pisciculture | 1 |
| General | 1 |
| Research and development | 1 |