| |||
| 变频变压调速技术 | |||
|
variable voltage frequency : 12 phrases in 8 subjects |
| Automobiles | 1 |
| Electric machinery | 2 |
| Electronics | 1 |
| Mechanics | 2 |
| Nuclear and fusion power | 1 |
| Rail transport | 1 |
| Steel production | 1 |
| Technology | 3 |
| |||
| 变频变压调速技术 | |||
|
variable voltage frequency : 12 phrases in 8 subjects |
| Automobiles | 1 |
| Electric machinery | 2 |
| Electronics | 1 |
| Mechanics | 2 |
| Nuclear and fusion power | 1 |
| Rail transport | 1 |
| Steel production | 1 |
| Technology | 3 |