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单词 coelostat
释义 coe·lo·stat
\ˈ ̷ ̷ ̷ ̷ˌstat\ noun
(-s)
Etymology: International Scientific Vocabulary coelo- (from Medieval Latin caelum sky, heaven, from Latin caelum heaven) + -stat
: an instrument consisting of an adjustable plane mirror clock-driven on an axis parallel to the axis of the earth and a second fixed mirror that act together to send light from a celestial body in a fixed direction — compare heliostat
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