 |
| |||
| hollow steel (材) | |||
|
空心钢 : 45 phrases in 10 subjects |
| Angling hobby | 1 |
| Aviation | 1 |
| Bridge construction | 2 |
| Engineering geology | 1 |
| General | 1 |
| Metallurgy | 9 |
| Oil / petroleum | 1 |
| Steel production | 1 |
| Technology | 27 |
| Wind Energy | 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