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单词 paraboloid
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pa•rab•o•loid  (pə rabə loid′),USA pronunciation n. [Geom.]
  1. Mathematicsa surface that can be put into a position such that its sections parallel to at least one coordinate plane are parabolas.
Cf. elliptic paraboloid, hyperbolic paraboloid. 
  • 1650–60; parabol(a) + -oid
pa•rab•o•loi•dal  (pə rab′ə loidl, par′ə bə-),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
paraboloid /pəˈræbəˌlɔɪd/ n
  1. a geometric surface whose sections parallel to two coordinate planes are parabolic and whose sections parallel to the third plane are either elliptical or hyperbolic. Equations x²/a² ± y²/b² = 2cz

paˌraboˈloidal adj
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