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单词 trihedral
释义

WordReference Random House Unabridged Dictionary of American English © 2024
tri•he•dral  (trī hēdrəl),USA pronunciation adj. [Geom.]
  1. having, or formed by, three planes meeting in a point:a trihedral angle.

n. 
  1. a trihedron.
  • tri- + -hedral 1780–90

Collins Concise English Dictionary © HarperCollins Publishers::
trihedral /traɪˈhiːdrəl/ adj
  1. having or formed by three plane faces meeting at a point
n
  1. a figure formed by the intersection of three lines in different planes
Etymology: 18th Century: from tri- + Greek hedra base, seat + -al1
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更新时间:2024/11/10 15:10:10