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planetarium 音標拼音: [pl ,ænət'ɛriəm] n. 行星儀,天文 行星儀,天文 planetarium n 1: a building housing an instrument for projecting the positions of the planets onto a domed ceiling 2: an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome 3: an apparatus or model for representing the solar systemsPlanetarium \ Plan` e* ta" ri* um\, n. [ NL.: cf. F. plan[' e] taire. See { Planetary}.] An orrery. See { Orrery}. [ 1913 Webster] 22 Moby Thesaurus words for " planetarium": Cassegrainian telescope, Newtonian telescope, OAO, OSO, astronomical observatory, astronomical telescope, coelostat, coronagraph, coronograph, heliostat, observatory, orrery, radar telescope, radio observatory, radio telescope, reflector, refractor, spectrograph, spectroheliograph, spectrohelioscope, spectroscope, telescope
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