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astroid是什么意思

astroid

美['æstrəʊɪd]  英['æstrəʊɪd]
n.  星形线
adj.  星状的

例句

  1. Construct the astroid as the envelope of a family of lines. 作由线族包络线所形成的星状线.
  2. Construct an animation of three concurrent tangents of the astroid. 建构一动态绘图:展示星状线共点的三切线。
  3. Construct an animation showing the inscribed ellipse of an astroid. 建构一动态绘图:展示星状线的内切椭圆。
  4. Obviously, a line of astroid nebula is a result which the star old age evolves. 可见,行星状星云是恒星晚年演化的结果。
  5. Show how a deltoid of maximal size slides inside a stationary astroid. 在固定不动的星状线内,有一个最大的三角线在其间滚动。
  6. Construct rotating cardioid and astroid while remaining orthogonal to each other. 作旋转的心脏线和旋转的星状线,且彼此维持正交。
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