| |||
| 噪声幅度调制; 噪声调幅 | |||
| 振幅噪声调制 | |||
|
amplitude noise modulation : 6 phrases in 3 subjects |
| Air defense | 4 |
| Information technology | 1 |
| Technology | 1 |
| |||
| 噪声幅度调制; 噪声调幅 | |||
| 振幅噪声调制 | |||
|
amplitude noise modulation : 6 phrases in 3 subjects |
| Air defense | 4 |
| Information technology | 1 |
| Technology | 1 |