| 单词 | Cassegrain telescope |
| 释义 | Cassegrain telescope /kas"euh grayn'/, Astron. a reflecting telescope in which the light, passing through a central opening in the primary mirror, is brought into focus a short distance behind it by a secondary mirror. Also called Cassegrainian telescope /kas'euh gray"nee euhn/. [1805-15; named after N. Cassegrain, 17th-century French scientist, its inventor] |
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