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| oil-vapor pump | |||
| oil air pump | |||
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油气 泵 : 18 phrases in 9 subjects |
| Chemistry | 1 |
| Electronics | 3 |
| General | 1 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Technology | 6 |
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