| 单词 | ion cloud | 
| 释义 | ion cloud [`ī´än ´klau̇d]  GEOPHYSICS An inhomogeneity or patch of unusually great ion density in one of the regular regions of the ionosphere; such patches occur quite often in the E region.  PHYSICAL CHEMISTRY A slight preponderance of negative ions around a positive ion in an electrolyte, and vice versa, according to the Debye-Hückel theory. Also known as ion atmosphere.  | 
	
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