 |
| |||
| controlled reaction | |||
| 受控反应: 13 phrases in 8 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 3 |
| General | 1 |
| Nuclear physics | 1 |
| Space | 3 |
| Technology | 2 |
| Water resources | 1 |
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