| |||
| 机械化采矿 | |||
|
mechanized mining : 8 phrases in 3 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| Mineralogy | 4 |
| Technology | 3 |
| |||
| 机械化采矿 | |||
|
mechanized mining : 8 phrases in 3 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| Mineralogy | 4 |
| Technology | 3 |