 |
| |||
| 炮孔口 | |||
| 钻孔口; 炮眼口 | |||
| hole collar: 17 phrases in 7 subjects |
| Drilling | 3 |
| Earth sciences | 1 |
| Electric machinery | 3 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 4 |
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