 |
| |||
| selectivity signal | |||
| selection signal | |||
| selection signals; selective signal | |||
|
选择信号 : 24 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 3 |
| Bridge card game | 1 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 1 |
| Space | 1 |
| Technology | 9 |
| Telecommunications | 2 |
|
| |||
| selectivity signal | |||
| selection signal | |||
| selection signals; selective signal | |||
|
选择信号 : 24 phrases in 9 subjects |
| Air defense | 3 |
| Aviation | 3 |
| Bridge card game | 1 |
| Electronics | 3 |
| General | 1 |
| Geophysics | 1 |
| Space | 1 |
| Technology | 9 |
| Telecommunications | 2 |