| 单词 | porro prism |
| 释义 | Porro prism[ pawr-oh ] / ˈpɔr oʊ / noun Optics.an isosceles, right-triangular prism in which light entering one half of the hypotenuse face is reflected at the two short sides and is reversed in orientation when it leaves the other half of the hypotenuse: used in 90°-oriented pairs in binoculars to increase the length of the optical path and to erect the final image. Origin of Porro prismnamed after Ignazio Porro (1801–75), Italian engineer Words nearby Porro prismporpoise, porrect, porridge, porrigo, porringer, Porro prism, Porsena, Porson, port, porta, portabella Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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