| |||
| 无级变速调节 | |||
| 变速控制 | |||
| 变速调节 | |||
| 可变速度控制器 | |||
| |||
| 可变速控制器 | |||
| 变速控制 | |||
| 调速控制 | |||
| 变速调节 | |||
|
variable-speed control : 13 phrases in 9 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Rail transport | 1 |
| Refrigeration | 4 |
| Road construction | 1 |
| Technology | 2 |
| Wind Energy | 1 |