 |
| |||
| mining system; system of mining | |||
|
开采 系统 : 12 phrases in 6 subjects |
| Earth sciences | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Mining | 2 |
| Oil / petroleum | 4 |
| Technology | 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