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单词 siderostat
释义 siderostat
 —siderostatic,  adj.  
 /sid"euhr euh stat'/,  n.  
 a telescopic device for reflecting the light of a star in a constant direction, the chief component of which is a plane mirror turned by a clock mechanism to correct for the rotation of the earth.
 [1875-80; SIDERO-2 + -STAT]
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更新时间:2025/1/22 20:58:57