planetarium
英 [,plænɪ'teərɪəm]
美['plænə'tɛrɪəm]
- n. 天文馆；行星仪
英英释意
- 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 systems