| 单词 | central projection |
| 释义 | > as lemmascentral projection central projection n. geometrical projection in which each point on the surface of a sphere is projected onto a plane along the straight line passing through both the given point and the centre of the sphere; = gnomonic projection n. at gnomonic adj. 1b. ΚΠ 1816 W. A. Cadell On Lines Semidiurnal Arc 2 This perspective view is the same as the central or gnomonic projection of the sphere on the inside of a plane which touches the sphere at the pole of the equator. 1912 MotorBoating Apr. 6/2 In the gnomonic or central projection the eye is supposed to be at the center of the earth; hence all great circles..are seen as straight lines. 2015 J. McCleary Geom. from Differentiable Perspective (ed. 2) vii. 147 It would be most convenient to represent any great circle route as a straight line on a map. This attractive feature is enjoyed uniquely by central projection. < as lemmas |
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