| |||
| radio interface; air interface; air-interface | |||
|
interface air : 8 phrases in 3 subjects |
| Communications | 5 |
| Environment | 2 |
| General | 1 |
| |||
| radio interface; air interface; air-interface | |||
|
interface air : 8 phrases in 3 subjects |
| Communications | 5 |
| Environment | 2 |
| General | 1 |