| 单词 | ion pump | 
| 释义 | ion pump [`ī´än ´pǝmp]  ELECTRONICS A vacuum pump in which gas molecules are first ionized by electrons that have been generated by a high voltage and are spiraling in a high-intensity magnetic field, and the molecules are then attracted to a cathode, or propelled by electrodes into an auxiliary pump or an ion trap.  | 
	
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