| |||
| 相位与幅度调制; 调相调幅 | |||
|
phase and amplitude modulation : 18 phrases in 7 subjects |
| Automobiles | 1 |
| Electronics | 9 |
| General | 1 |
| Geophysics | 3 |
| Information technology | 1 |
| Space | 1 |
| Telecommunications | 2 |
| |||
| 相位与幅度调制; 调相调幅 | |||
|
phase and amplitude modulation : 18 phrases in 7 subjects |
| Automobiles | 1 |
| Electronics | 9 |
| General | 1 |
| Geophysics | 3 |
| Information technology | 1 |
| Space | 1 |
| Telecommunications | 2 |