英语词汇“petzval lens”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	petzval lens
释义	petz·val lens \ˈpetsˌväl-\ noun Usage: usually capitalized P Etymology: after Joseph Petzval died 1891 Austrian mathematician and opticist : a two-element highly achromatized camera objective having low transmission loss
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