| 单词 | transit clock |
| 释义 | > as lemmastransit clock transit clock n. Astronomy (now historical and rare) an astronomical clock used with a transit telescope in the observation of transits (sense 6b). ΘΚΠ the world > the universe > cosmology > science of observation > astronomical instruments > transit instrument > [noun] > part transit clock1767 transiter1902 1767 N. Maskelyne Acct. Going John Harrison's Watch 4 I, most days, wound up and compared the watch with the transit clock of the Royal Observatory myself. 1914 D. Gill & S. S. Hough Results Meridian Observ. Stars 1905 to 1908 p. xxii Till 1908 May 2 the transit clock in use with both transit-circles was Dent No. 39714. 2008 J. Ratcliff Transit of Venus Enterprise Victorian Brit. (2016) v. 98 To set a sturdy foundation for the transit, transit clock, altazimuth and photoheliograph, the hard rock of the hills had to be cut into and cement foundations lain. < as lemmas |
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