| |||
| 脉冲速率调制; 脉冲重复频率调制 | |||
|
pulse rate modulation : 6 phrases in 4 subjects |
| Air defense | 1 |
| Electronics | 3 |
| Technology | 1 |
| Telecommunications | 1 |
| |||
| 脉冲速率调制; 脉冲重复频率调制 | |||
|
pulse rate modulation : 6 phrases in 4 subjects |
| Air defense | 1 |
| Electronics | 3 |
| Technology | 1 |
| Telecommunications | 1 |