 |
| |||
| engine efficiency; motor efficiency | |||
|
发动机效率 : 17 phrases in 4 subjects |
| Automobiles | 6 |
| Shipbuilding | 5 |
| Space | 2 |
| Technology | 4 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips