†(a) the setting circle of a refracting telescope (obsolete); (b) = transit circle n. at transit, n. compounds 2 (now historical and rare).
| 单词 | θ64755 |
| 释义 | the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > telescope > refracting telescopes > parts of (1) refraction circle1788 †(a) the setting circle of a refracting telescope (obsolete); (b) = transit circle n. at transit, n. compounds 2 (now historical and rare). |
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