parabolas

英 [pəˈræbələz]

美 [pəˈræbələz]

n.  抛物线
parabola的复数

柯林斯词典

• 抛物线
  Aparabolais a type of curve such as the path of something that is thrown up into the air and comes down in a different place.

双语例句

• Aiming at the characteristic that current geometric modeling systems only provide line and arc but curve bridges have parabolas and offset lines of transition the parameter equations of transition curves 'offset lines was deduced and the model of geometrical object was put forward.
  针对目前的几何造型系统中一般只提供了直线和圆曲线（而曲线桥梁具有缓和曲线偏置线和抛物线）的情况，推导出了缓和曲线偏置线的参数方程，并提出了几何对象模型。
• Femoral lateral arcs are parabolas.
  股骨内侧弧的曲线是抛物线。
• The relation coefficient between regression equation and oxidation curve is over 0.9 and the rules of oxidation-temperature and oxidation-time are parabolas.
  由计算得到的氧化回归方程与氧化曲线的相关系数可达到0.9以上，高温氧化烧损量与温度和时间均呈抛物线规律。
• You can then calculate rigorously their future movements. The solutions of the Kepler problem are conic sections& circles, ellipses, parabolas, and hyperbolas and straight line.
  Kepler问题的解可以很容易解出，它们是圆锥曲线&椭圆，抛物线，双曲线和直线。
• The addition of director element in2 element bi-quad feeds gave high values of efficiency of illumination of offset parabolas.
  叠加双菱馈源天线增加的引向器给了偏馈抛物面天线更高的照射效率。
• The work rates corresponded to the maximum or minimum values of the quadratic parabolas and the turning point of the hyperbola was corresponding to about 68-70% of the? o_ ( 2max).
  二次抛物线的最大最小值和双曲线的明显“转折点”所对应的劳动强度约为68～70%■o2max。
• The relationship between mean of CT number and variance of CT number to axial deformation are parabolas.
  CT数的均值、方差随轴向变形变化关系曲线呈抛物线形式。
• The movement tracks of these balls in space are different parabolas.
  这些球在空中的运动轨迹是不同的抛物线。
• All of the 2nd, 3rd and 4th shell are parabolas or catenaries.
  壳层结构的第二、三、四层呈抛物线形状，亦与悬链线相近。
• Degree parabolas set at the knick po in ts of all levels of highways and urban roads Because there is no difference between circles and second?
  我国规范规定：各级公路及城市道路在变坡点处均应设置竖曲线，竖曲线形式为二次抛物线。