surface mining
| methods
| surface mining | |
| energ.ind. | 露天采矿 |
| expl. | 露天矿 |
| mineral. од. | 露天釆矿; 露天开采 |
| mining. | 表层采矿 |
| oil | 露天采矿; 露天开采 |
| tech. | 露天开釆矿; 露天开采法 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
|
surface mining : 11 phrases in 4 subjects |
| Earth sciences | 2 |
| Explosives and Explosive Ordnance Disposal | 5 |
| General | 1 |
| Technology | 3 |