| |||
| 脉宽调制-频率调制 | |||
| 脉宽调制-调频 | |||
| 脉冲持续时间调制调频 | |||
|
pulse duration modulation-frequency modulation : 3 phrases in 2 subjects |
| Earth sciences | 1 |
| Electronics | 2 |
| |||
| 脉宽调制-频率调制 | |||
| 脉宽调制-调频 | |||
| 脉冲持续时间调制调频 | |||
|
pulse duration modulation-frequency modulation : 3 phrases in 2 subjects |
| Earth sciences | 1 |
| Electronics | 2 |