英语词汇“gregorian telescope”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	gregorian telescope
释义	WordReference Random House Unabridged Dictionary of American English © 2024 Grego′rian tel′escope, a telescope similar in design to the Cassegrainian telescope but less widely used. 1755–65; named after James Gregory; see -ian Collins Concise English Dictionary © HarperCollins Publishers:: Gregorian telescope n a form of reflecting astronomical telescope with a concave ellipsoidal secondary mirror and the eyepiece set behind the centre of the parabolic primary mirror Etymology: 18th Century: named after J. Gregory (died 1675), Scottish mathematician who invented it
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更新时间：2024/9/21 1:56:12