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Sprengel pump | |||
high vacuum pump | |||
molecular pump | |||
high-vacuum pump | |||
perfect vacuum pump | |||
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low-pressure vacuum pump | |||
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high vacuum pump | |||
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high-vacuum pump |
高真 空 泵 : 12 phrases in 6 subjects |
Construction | 1 |
General | 2 |
Geophysics | 1 |
Metallurgy | 2 |
Shipbuilding | 1 |
Technology | 5 |