| 单词 | Ruhmkorff coil | 
| 释义 | Definition of Ruhmkorff coil in English:Ruhmkorff coil(also Ruhmkorff's coil) noun 
 OriginMid 19th century; earliest use found in Aide-mémoire Military Science. Definition of Ruhmkorff coil in US English:Ruhmkorff coil(also Ruhmkorff's coil) noun 
 OriginMid 19th century; earliest use found in Aide-mémoire to Military Science.  | 
	
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