| |||
| 振荡回路 | |||
| 振荡电路 | |||
| 振荡电路 | |||
|
oscillating circuit : 6 phrases in 6 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electricity | 1 |
| Metallurgy | 1 |
| Scientific | 1 |
| Shipbuilding | 1 |
| |||
| 振荡回路 | |||
| 振荡电路 | |||
| 振荡电路 | |||
|
oscillating circuit : 6 phrases in 6 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electricity | 1 |
| Metallurgy | 1 |
| Scientific | 1 |
| Shipbuilding | 1 |