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rotary piston
| vacuum pump
| rotary piston | |
| auto. | 转子; 旋转式活塞 |
| vacuum pump | |
| gen. | 真空录 |
| met. | 真空泵 |
| railw. | 真空水泵 |
| tech. | 真空抽气机 |
| vacuum-pump | |
| gen. | 排气唧筒 |
| |||
| 转子; 旋转式活塞 | |||
| 旋转活塞; 回转式活塞 | |||
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rotary piston vacuum pump : 50 phrases in 11 subjects |
| Agriculture | 1 |
| Automobiles | 7 |
| Chemistry | 3 |
| Computer numerical control | 1 |
| Ecology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Refrigeration | 3 |
| Space | 1 |
| Technology | 30 |
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