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 | Từ điển Oxford Learners Wordfinder Dictionary 
 
	
		|  Elinvar 
 
 Elinvar is a trademark for a kind of steel used for watch springs because its elasticity is constant over a wide range of temperatures
 • Syn:
 chrome-nickel steel
 • Usage Domain:
 trademark
 • Hypernyms:
 alloy steel
 
 
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