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与"vacuum unit"相近的词条

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• vacuum-type photodetector
• vacuum ultra-violet spectrograph
• vacuum ultraviolet
• vacuum ultraviolet spectrometer
• vacuum ultraviolet spectroscopy
• vacuum unit
• vacuum valve
• vacuum ventilation
• vacuum ventilation system
• vacuum vessel
• vacuum water
• vacuum zone
• vacuumaspiration
• vacuumbrake
• vacuumcleaner
• vacuumdistillation

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