 |
| |||
| rotary piercing | |||
|
辊式 穿 孔 : 12 phrases in 2 subjects |
| Metallurgy | 10 |
| Steel production | 2 |
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