单词 | paraboloid |
释义 | Word Frequency paraboloid(pəˈræbəˌlɔɪd) noun 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 = 2 cz Derived forms paraboloidal (paˌraboˈloidal) adjective |
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