| 单词 | spot cycle |
| 释义 | > as lemmasspot cycle c. Astronomy. In sense A. 1c, esp. with reference to sunspots, as spot cycle, spot group, spot position, etc. See also spot map n. (a) at Compounds 5. ΚΠ 1860 London, Edinb., & Dublin Philos. Mag. 4th Ser. 20 272 I have failed in finding out some configuration of the planets to account for the spot-cycle of 11.1 years. 1877 G. F. Chambers Handbk. Descr. Astron. (ed. 3) i. i. 30 At epochs of minimum spot-display. 1885 A. M. Clerke Pop. Hist. Astron. 200 The absolute depth of spot-cavities..was determined by Father Secchi. 1903 A. M. Clerke Probl. Astrophysics 92 It is commonly taken for granted that the widened lines constitute the spot-spectra. 1926 H. C. Macpherson Mod. Astron. iii. 45 A relation between high-rotation speeds and spot-development. 1968 Jrnl. Brit. Astron. Assoc. 78 479 The associated spot group..was inconspicuous. 2013 Monthly Notices Royal Astron. Soc. 15 Mar. 2/1 There is no evidence for any strong latitudinal dependence of spot position from Doppler images. < as lemmas |
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