 |
| |||
| каскадный способ | |||
| 分段焊法: 17 phrases in 4 subjects |
| Construction | 1 |
| General | 8 |
| Metallurgy | 3 |
| Technology | 5 |
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