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首頁英語詞典quadrantquadrant英英釋意

quadrant

英 ['kw?dr(?)nt] 美['kwɑdr?nt]
  • n. 象限；[海洋][天] 象限儀；四分之一圓

英英釋意

1. a quarter of the circumference of a circle
2. a quarter of the circumference of a circle
3. any of the four areas into which a plane is divided by two orthogonal coordinate axes
4. the area enclosed by two perpendicular radii of a circle
5. a measuring instrument for measuring altitude of heavenly bodies