| |||
| secondary radar system; secondary radar | |||
| secondary surveillance radar | |||
|
radar secondaire : 18 phrases in 4 subjects |
| Aviation | 5 |
| Communications | 2 |
| Natural sciences | 2 |
| Transport | 9 |
| |||
| secondary radar system; secondary radar | |||
| secondary surveillance radar | |||
|
radar secondaire : 18 phrases in 4 subjects |
| Aviation | 5 |
| Communications | 2 |
| Natural sciences | 2 |
| Transport | 9 |