 |
| |||
| mine pollution | |||
| 矿 污染: 16 phrases in 7 subjects |
| Desert science | 1 |
| Ecology | 1 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Metallurgy | 2 |
| Technology | 6 |
| Water resources | 1 |
|
| |||
| mine pollution | |||
| 矿 污染: 16 phrases in 7 subjects |
| Desert science | 1 |
| Ecology | 1 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Metallurgy | 2 |
| Technology | 6 |
| Water resources | 1 |