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汉语拼音：shuāng qū xiàn

如果平面内一个动点到两个定点的距离的差的绝对值等于定长，那么这个动点的轨迹叫做双曲线。这两个定点叫做双曲线的焦点，两个焦点间的距离叫做焦距。

双曲线 [shuāng qū xiàn]

1. 数学上指到二定点距离之差的绝对值为定数的一切点所成的图形。

• Some simulation proved that this arithmetic was valid to elliptic and hyperbolic transfer trajectory.

  并仿真验证了该算法对椭圆和双曲线转移轨道均适用。

• Exponential, hyperbolic, and harmonic curve equations are often used to mathematically express the decline curve.

  指数曲线方程、双曲线方程以及调和曲线方程常用来数学表达递减曲线。

• As a result, I can calculate hyperbolic sines on my 68HC11, but I can't get the performance boost that comes from using just a 24-bit float.

  因此，我可以在68HC11计算双曲线，但我不能得到的性能提升，因为仅使用了24位浮点。

• The index curve and hyperbola curve models often used in forecasting settlement of soft soil foundation have been introduced.

  介绍了软土地基沉降预测中常用的指数曲线模型和双曲线模型。

• Evelyn has a pair of shapely legs. 19. She has such a curvaceous figure.

  艾琳有一双曲线美好的腿.19.她的身段很美。

• An hyperbolic function was proposed as a load transfer function to analyze the load transfer mechanism of a single pile.

  选用双曲线荷载传递函数分析单桩的荷载传递规律。

• The families of hyperbolas for each transmitter pair can be directly plotted on maps, including corrections for known propagation anomalies.

  各基站间的双曲线族可以在地图中直接绘制出来，甚至包括不规则传播导致的误差修正。

• If the velocity relationships are revised, then the hyperbola is of the opposite phase from the reflection.

  如果速度关系颠倒，则双曲线相位便与反射的相位相反。

• Moreover, they may find it difficult to defer gratification or, as economists like to put it, they use hyperbolic discounting.

  此外，他们会发现推迟享乐很困难，就像经济学家用双曲线贴现假设的那样。