| |||
| 调幅噪声 | |||
|
amplitude- modulation noise : 8 phrases in 4 subjects |
| Air defense | 4 |
| Electronics | 2 |
| Geophysics | 1 |
| Information technology | 1 |
| |||
| 调幅噪声 | |||
|
amplitude- modulation noise : 8 phrases in 4 subjects |
| Air defense | 4 |
| Electronics | 2 |
| Geophysics | 1 |
| Information technology | 1 |