 |
| |||
| open seam | |||
| 开 式 缝: 16 phrases in 7 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Aviation | 3 |
| Drilling | 1 |
| Metallurgy | 1 |
| Technology | 6 |
| Textile industry | 3 |
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