 |
| |||
| open switch | |||
|
开 启 开关 : 28 phrases in 12 subjects |
| Aviation | 1 |
| Dermatology | 1 |
| Earth sciences | 1 |
| Electric machinery | 3 |
| Electronics | 7 |
| Hydroelectric power stations | 3 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Project management | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 7 |
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