| |||
| 脉码调制与调相 | |||
| |||
| 脉码调制-相位调制 | |||
|
pulse-code modulation /phase modulation : 9 phrases in 5 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| Geophysics | 1 |
| Space | 1 |
| |||
| 脉码调制与调相 | |||
| |||
| 脉码调制-相位调制 | |||
|
pulse-code modulation /phase modulation : 9 phrases in 5 subjects |
| Air defense | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| Geophysics | 1 |
| Space | 1 |