- an astronomical instrument consisting essentially of a plane mirror driven about two axes so that light from a celestial body, esp the sun, is reflected along a constant direction for a long period of time
| 单词 | siderostat |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 sid•er•o•stat (sid′ər ə stat′),USA pronunciation n.
Collins Concise English Dictionary © HarperCollins Publishers:: siderostat /ˈsaɪdərəʊˌstæt/ n
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