pulse frequency modulation
| spread spectrum
| pulse frequency modulation abbr. | |
| earth.sc. | 脉冲频率调幅; 脉冲调幅 |
| el.mach. | 脉频调制 |
| rem.sens. | 脉冲频率调制 |
| tech. | 脉冲调频 |
| pulse-frequency modulation abbr. | |
| auto. | 脉频调制 |
| avia. | 脉冲频率调制 |
| spread spectrum abbr. | |
| gen. | 展频 |
| avia. | 频谱扩展; 发散光谱 |
| cryptogr. | 扩展频普 |
| IT | 扩展频谱 |
| space | 扩频 |
|
pulse frequency modulation : 39 phrases in 9 subjects |
| Air defense | 7 |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 17 |
| Geophysics | 1 |
| Information technology | 1 |
| Space | 3 |
| Technology | 6 |
| Telecommunications | 1 |