| |||
| 调幅调相转换 | |||
| |||
| 调幅调相变换 | |||
|
amplitude modulation/ phase modulation conversion : 3 phrases in 3 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Space | 1 |
| |||
| 调幅调相转换 | |||
| |||
| 调幅调相变换 | |||
|
amplitude modulation/ phase modulation conversion : 3 phrases in 3 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Space | 1 |