| |||
| 电压一频率 | |||
|
voltage to frequency : 18 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Electric machinery | 2 |
| Electronics | 5 |
| General | 1 |
| Geophysics | 4 |
| Information technology | 1 |
| Technology | 2 |
| |||
| 电压一频率 | |||
|
voltage to frequency : 18 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Electric machinery | 2 |
| Electronics | 5 |
| General | 1 |
| Geophysics | 4 |
| Information technology | 1 |
| Technology | 2 |