| 单词 | primary mirror |
| 释义 | > as lemmasprimary mirror primary mirror n. Astronomy (in a reflecting telescope) the main mirror that collects and focuses incoming light; = object mirror n. at object n. Compounds 2. ΚΠ 1935 N.Y. Times 11 Aug. n2/3 The image of the sun will be caught by a large primary mirror... Through other mirrors it will be reflected into the spectroscope. 1964 Science 12 June 1304/3 Since the telescope was intended to photograph stars down to magnitude 18.0.., the aperture of the primary mirror had to be not less than 60 inches. 2003 Astronomy Aug. 98/2 The Newtonian design uses a primary mirror and a second, ‘diagonal’ mirror. < as lemmas |
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