| 单词 | ring vortex | 
| 释义 | Definition of ring vortex in English:ring vortexnoun 
 OriginMid 19th century; earliest use found in Journal of the Franklin Institute. Definition of ring vortex in US English:ring vortexnoun 
 OriginMid 19th century; earliest use found in Journal of the Franklin Institute.  | 
	
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