研究了体视投影的复原问题，提出了根据两个完全四点形为体视投影恢复三直角四面体的方法。
The problem of reconstruction of a stereo projection is studied. The method of reconstructing a trirectangular tetrahedron from a stereo projection made up of two complete quadrangles is put forward.
本文运用几何学中完全四边形的密克点概念来求取运动平面瞬时加速度中心。
The geometric concept of the Mique Point with a complete quadrilateral is employed to locate the instantaneous acceleration centre of a moving plane.
本文运用几何学中完全四边形的密克点概念来求取运动平面瞬时加速度中心。
The geometric concept of the Mique Point with a complete quadrilateral is employed to locate the instantaneous acceleration centre of a moving plane.
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