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              Berek compensator
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                      Definition: The Berek compensator is an optical device that is capable of quantitativelydetermining the wavelength retardation of a crystal,fiber,mineral,plastic film or otherbirefringent material.貝累克補(bǔ)償器bèi lèi kè bǔ cháng qì......（本文共 198 字）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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