单词 | hyperboloid |
释义 | Word Frequency hyperboloid(haɪˈpɜːbəˌlɔɪd) noun a geometric surface consisting of one sheet, or of two sheets separated by a finite distance, whose sections parallel to the three coordinate planes are hyperbolas or ellipses. Equations x2/a2 + y2/ b2 – z2/c2 = 1 (one sheet) or x2/a2 – y2/b2 – z2/c2 = 1 (two sheets) where a, b, and c are constants |
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