 |
| |||
| 方踵 | |||
| |||
| 无坡口对接 | |||
|
square butt : 20 phrases in 7 subjects |
| Architecture | 2 |
| Electric machinery | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Nuclear and fusion power | 1 |
| Plastics | 4 |
| Technology | 9 |
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