 |
| |||
| 延迟脉冲 | |||
|
delayed pulse : 10 phrases in 8 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Geophysics | 1 |
| Power system protection | 2 |
| Radio | 1 |
| Shipbuilding | 1 |
| Technology | 2 |
|
| |||
| 延迟脉冲 | |||
|
delayed pulse : 10 phrases in 8 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Geophysics | 1 |
| Power system protection | 2 |
| Radio | 1 |
| Shipbuilding | 1 |
| Technology | 2 |