 |
频率跟踪
| 系统
| 频率跟踪 | |
| gen. | frequency-tracking |
| DPA系统 | |
| pest.contr. | DPA System |
| F系统 | |
| rem.sens. | F system |
| PELV系统 | |
| el.mach. | PELV system |
| SELV系统 | |
| el.mach. | SELV system |
| TN 系统 | |
| IT | TN system |
| TN-C 系统 | |
| IT | TN-C system |
| TN-C-S 系统 | |
| IT | TN-C-S system |
| TN-S 系统 | |
| IT | TN-S system |
| 系统 | |
| tech. | system |
| |||
| frequency-tracking | |||
|
频率跟踪 : 16 phrases in 8 subjects |
| Air defense | 2 |
| Astronautics | 1 |
| Communications | 1 |
| Electronics | 5 |
| Geophysics | 1 |
| Shipbuilding | 1 |
| Space | 4 |
| Telecommunications | 1 |
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