| |||
| autocommutateur spatial; système de commutation spatiale; système spatial | |||
|
space-division switching system : 4 phrases in 1 subject |
| Electronics | 4 |
| |||
| autocommutateur spatial; système de commutation spatiale; système spatial | |||
|
space-division switching system : 4 phrases in 1 subject |
| Electronics | 4 |