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单词 parallel sphere
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parallel sphere
parallel sphere n. Astronomy rare the celestial or terrestrial sphere when its equator is parallel to the horizon (as it is only at the earth's poles); cf. oblique sphere n. at oblique adj., n., and adv. Compounds 2, right sphere n. at right adj. and int. Compounds 2.
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parallel sphere1594
1594 T. Blundeville Exercises iii. i. xvii. f. 148v This kind of Spheare is called a paralel Spheare, in which Sphear they that dwel haue 6. moneths day, and 6. moneths night.
1926 H. N. Russell et al. Astron. I. i. 22 The Parallel Sphere. If the observer is at the pole of the earth, where his latitude is 90°, the celestial pole will be at his zenith, and the equator will coincide with his horizon.
extracted from paralleln.adj.adv.
parallel sphere
oblique sphere, parallel sphere, right sphere: see oblique adj. 2b, parallel n. 1b, right adj. 3a.extracted from spheren.
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