conic

• Conic sections get their names because they take the shapes of the cross sections of a cone
  我们称这四种形状为圆锥截线，是由于以不同方法切割圆锥体，便可以得到这些形状。
• How to reconstruct the three - dimensional structure of conic curve in three - dimensional space from translation parameters is discussed
  给出了恢复空间二次曲线参数的算法思路。
• The existing algorithms for conic correspondence rely on a poiynomial condition . they are non - linear algorithms
  目前已有的二次曲线的匹配算法依赖于一种多项式约束，是一种非线性算法。
• The sampan was seen sailing away at high speed . after a brief chase at sea , marine police intercepted the sampan off conic island
  水警人员于海上进行追截，并于饭甑洲附近截获该艘舢舨。
• The results show that conic interpolation model method is an efficient direct search method . this should be further researched
  试验结果表明锥函数插值模型算法是一类有效的直接方法，值得进一步研究。
• Typically , arc and circle are the most widely used contents of the conic . they should be presented by nurbs curve reasonably and correctly
  因此，用nurbs曲线表示圆弧、圆以及一般二次曲线是很重要的。
• 3 . pneumatic backpressure moving erasing knife , non - shaft pneumatic conic node printing plate loading , prompt and convenient printing plate changing
  3气动背压式移动刮刀，无轴气动锥顶装版，换版省时方便。
• Pascal ' s theorem : the points of intersection of the pairs of opposite sides of a hexagon inscribed in a conic are collinear
  帕司卡定理：给定一个圆上的六边形，则此六边形三对对边直线的交点在同一直线上。
• In the solving of absolute conic images , a novel circular point based method is used . the experiments show that the algorithm is feasible
  其中在绝对二次曲线的像的求解中研究了一种使用虚圆点的方法，实验结果表明该算法是行之有效的。
• Secondly , the various conic arcs and conies are generated by the rational triangular bezier and the b - spline method in polar coordinates system
  其次，给出圆锥曲线弧及其补弧的三角有理b zier表示；以及任意角度二次曲线弧的极坐标b样条表示。