pulse frequency modulation
| control system
| pulse frequency modulation | |
| 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 | |
| auto. | 脉频调制 |
| avia. | 脉冲频率调制 |
| control system | |
| hydroel.st. од. | 控制系统 |
| manag. | 监督制度 |
| met. | 操纵系统; 调节系统 |
| space | 控制 系统 |
| tech. | 控制制度; 控制方式; 制导系统 |
| wind. | 风力机控制系统; 控制系统 |
|
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 |