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| 1. | open pit roasting method |
| 使用地洞式烧炉的烧烤方法 |
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| 2. | open pit development |
| 露天矿开拓 |
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| 3. | open pit incineratio |
| 露天坑式焚烧 |
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| 4. | open pit pig roasting factory |
| 使用地洞式烧炉的烧猪厂 |
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| 5. | open pit quarry |
| 露天矿场 |
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| 6. | open pit; opencast pit |
| 露天煤矿 |
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| 7. | open pit survey |
| 露天矿井测量 |
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| 8. | mining shaft and open-pit |
| 采矿井场 |
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| 9. | open pit incinerator |
| 非密封式焚化炉 |
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| 10. | ventilation for deep open pit |
| 深凹露天矿通风 |
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