英语词汇“ramsden eyepiece”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	ramsden eyepiece
释义	Ramsden eyepiece noun Optics. an eyepiece consisting of two plano-convex crown-glass lenses of equal focal length, placed with the convex sides facing each other and with a separation between the lenses of about two-thirds of the focal length of each. Origin of Ramsden eyepiece 1840–50; named after Jesse Ramsden (1735–1800), English maker of astronomical instruments Words nearby Ramsden eyepiece Rampur, ram raid, ramrod, Ramsay, Ramsay Hunt's syndrome, Ramsden eyepiece, Ramses, Ramses I, Ramses II, Ramses III, Ramsey Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
随便看	expansion wave expansive expansive bit expansive classification expansivity ex parte expat expatiate expatriate expatriation expect expectancy expectant expectation expectation of life expectation sunday expectation week expectative expected frequency expected utility expected value expecting expectorant expectorate expectoration

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Ramsden eyepiece