双曲线的英文：
hyperbola

hyperbolic cooling tower
双曲线型冷却塔

hyperbolic cosine.
双曲线函数之余弦

radio hyperbolic navigation system
无线电双曲线定位系统

equilateral hyperbola
直角双曲线,等轴双曲线

The amplitude of the hyperbola may be comparable with that of the associated reflection, or it may be less
双曲线的振幅可能是和有关的反射相类似的，也可能要小一些。

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。

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。