单词 | planisphere |
释义 | pla·ni·sphere ![]() n. 1. A representation of a sphere or part of a sphere on a plane surface. 2. Astronomy A polar projection of half or more of the celestial sphere on a chart equipped with an adjustable overlay to show the stars visible at a particular time and place. pla′ni·spheric (-sfîrĭk, -sfĕr-), pla′ni·spheri·cal (-ĭ-kəl) adj. |
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