单词 | great circle |
释义 | great circlenoun A circle on the surface of a sphere which lies in a plane passing through the sphere’s centre. As it represents the shortest distance between any two points on a sphere, a great circle of the earth is the preferred route taken by a ship or aircraft.A spherical triangle is the space included by arcs of great circles on the surface of a sphere… these arcs are always less than a semicircle....
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