| |||
| 脉码调制-频率调制 | |||
| 脉码调制一调频 | |||
| 脉码调制-调频 | |||
|
pulse code modulation -frequency modulation : 6 phrases in 2 subjects |
| Electronics | 5 |
| Geophysics | 1 |
| |||
| 脉码调制-频率调制 | |||
| 脉码调制一调频 | |||
| 脉码调制-调频 | |||
|
pulse code modulation -frequency modulation : 6 phrases in 2 subjects |
| Electronics | 5 |
| Geophysics | 1 |