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单词 meridian circle
释义

WordReference Random House Unabridged Dictionary of American English © 2024
meridian cir′cle, [Astron.]
  1. Astronomya transit instrument provided with a graduated vertical scale, used to measure the declinations of heavenly bodies and to determine the time of meridian transits. Also called circle, transit circle, transit instrument. 
  • 1540–50

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