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单词 astronomical telescope
释义

WordReference Random House Unabridged Dictionary of American English © 2024
astronomical telescope, 
  1. Opticsa telescope having an objective with a long focal length and an eyepiece with a short focal length, usually used for observing celestial bodies. Also called Kepler telescope. 
  • 1880–85

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更新时间:2024/11/11 4:00:38