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| 真空组件单元 | |||
| 减压蒸馏装置 | |||
| 真空装置; 真空元件 | |||
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vacuum unit : 35 phrases in 9 subjects |
| Automobiles | 4 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Information technology | 1 |
| Metallurgy | 7 |
| Oil / petroleum | 3 |
| Oil processing plants | 4 |
| Plastics | 4 |
| Technology | 9 |
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