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| 多泵抽油; 多井抽油 | |||
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multiple pumping : 29 phrases in 10 subjects |
| Automobiles | 3 |
| Chemistry | 3 |
| Desert science | 1 |
| Electric machinery | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 5 |
| Refrigeration | 1 |
| Shipbuilding | 1 |
| Technology | 10 |
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