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| 露天开采法 | |||
| 扫舱系统残油扫舱系统 | |||
| 残油管系 | |||
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| 带伐作业 | |||
| 条地制度 | |||
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stripping system : 23 phrases in 8 subjects |
| Agriculture | 3 |
| Earth sciences | 2 |
| Forestry | 8 |
| Metallurgy | 1 |
| Nautical | 1 |
| Shipbuilding | 1 |
| Technology | 6 |
| Water resources | 1 |
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