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EnglishTHE SCHOLAR'S LEXICON

bipyramid

/bahy-pir-uh-mid/US // baɪˈpɪr ə mɪd //UK // (ˌbaɪˈpɪrəmɪd) //

双锥体,双金字塔,双子塔,双子座

Definitions

n.名词 noun
  1. 1

    Crystallography.

    • : a form symmetrical about a plane dividing it into two pyramids.

Examples

  • Hexagonal bipyramid (fig. 70), bounded by twelve isosceles triangles each of which are equally inclined to two planes of symmetry.

  • The general form is bounded by twelve scalene triangles and is a ditrigonal bipyramid.

  • It may be considered as the hemihedral form of the ditetragonal bipyramid.

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