单词	Bertrand lens
释义	Bertrand lens noun : an auxiliary removable lens in the tube of a polarizing microscope used to obtain interference figures Word History Etymology probably after Joseph L. F. Bertrand
随便看	flav- flavanols flavanone flavanones flavanthrene flavanthrone flavedo Flaveria flavescence flavescent Flavian flavianate flavid flavin flavin adenine dinucleotide flavin enzyme flavin mononucleotide flavine flavines flavins flavius gratianus flavivirus flavo- flavone flavones

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