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单词 trihedron
释义

WordReference Random House Unabridged Dictionary of American English © 2024
tri•he•dron  (trī hēdrən),USA pronunciation n., pl. -drons, -dra (-drə).USA pronunciation [Geom.]
  1. the figure determined by three planes meeting in a point.
Also, trihedral.
  • tri- + -hedron 1820–30

Collins Concise English Dictionary © HarperCollins Publishers::
trihedron /traɪˈhiːdrən/ n ( pl -drons, -dra / -drə/)
  1. a figure determined by the intersection of three planes
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