hyperbola
英 [haɪˈpɜː.bəl.ə]
美 [haɪˈpɝː.bəl.ə]
- n. [数] 双曲线
记忆方法
将“hyperbola”拆分成“hyper”和“bola”。记住“hyper”意味着过度、极端，而“bola”则联想到球体。结合起来，想象一个球体被拉得非常极端，变得非常扭曲，形成一个双曲线的形状，这就是“hyperbola”。通过这种视觉联想，可以帮助记忆这个词的定义：一种平面上的曲线，其中任一点到两个固定点（焦点）的距离之和是一个常数。
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中文词源
hyperbola 双曲线
hyper-,超过的，向上的，-bola,扔，词源同ball,ballet,ballistic.即向上扔的，用于指双曲线。
英语词源
- hyperbola (n.)
- 1660s, from Latinized form of Greek hyperbole "extravagance," literally "a throwing beyond" (see hyperbole). Perhaps so called because the inclination of the plane to the base of the cone exceeds that of the side of the cone.
权威例句
- 1. A hyperbola approaches but does not meet its asymptote.
- 双曲线逐渐接近它的渐近线但不相交.
- 2. The relation between the chlorinity and porosity may be approximated by a hyperbola.
- 含氯量和孔隙度之间的关系图式也许近似于一条双曲线.
- 3. The method uses small random samples and the limits of a hyperbola.
- 帕克斯顿的方法采用了小范围随机抽样和双曲线的极限.
- 4. Another is to intenerate the input vectors by hyperbola tangent function.
- 二是采用双曲线正切函数柔化输入矢量.
- 5. Construct hyperbola and the ellipse by taking the inversion.
- [利用反逆法作双曲线及椭圆].