All points on the surface of a sphere are equally distant from the center.

到面上任何一点的距离都一样。

That's also of great value scientifically.

这个外面区域的科学研究意义很大。

The research was based on pulsar timing observations carried out with the Five-hundred-meter Aperture Spherical Telescope (FAST).

这项研究是基于500米口径面望远镜(FAST)进行的脉冲星计时观测。

To prove the theorem we shall suppose that the graph G is drawn on a sphere as described above.

为了证明这个定理，我们假定这个圆G能按上述方式画在一个面上。

Spherical reflectors don't perfectly focus all the incoming rays.

面反射器不能完美地聚焦所有入射。

Say we have a lens that has a spherical face on both sides, known as a convex lens.

假设我们有一个具有面的镜头 两侧，称为凸透镜。

Initially the telescope used line feeds, elongated receivers that could gather signals within the focal line of the spherical dish.

最初， 望远镜使用馈送，细长的接收器可以收集面盘焦内的信号。

There actually is something called the Riemann sphere that involves dividing by zero by a different method, but that's a story for another day.

事实上，有个叫黎曼面的东西，它涉及到通过不同的方法来除以 0，但今天我们且不谈这个。

Rather than using a parabolic shape for the dish that would focus everything to a single point, they chose a spherical curve.

他们没有使用将所有东西都集中到一个点的抛状，而是选择了面曲。

So, as a spherical wave moves farther from its source, its intensity will decrease by the square of the distance from it.

因此，随着面波远离其源，其强度将按距其距离的平方而减小。

China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world's largest single-dish radio telescope, opened to global scientists and began accepting observation applications from astronomers starting from March 31.

世界上最大的单盘射电望远镜中国五百米口径面射电望远镜（FAST）向全科学家开放，并从 3 月 31 日开始接受天文学家的观测申请。

Engraved upon the smooth golden surface, where seconds before there had been nothing, were five words written in the thin, slanted handwriting that Harry recognized as Dumbledore's: I open at the close.

刚才还什么都没有的平滑金色面上，出现了五个瘦瘦的凸起的斜体字，哈利一眼就认出来那是邓不利多的笔迹：我打开了最后的。

Werthimer and his colleagues have used machine learning to come up with a ranking of stars to be observed in an ongoing SETI project that uses the world's largest single-dish telescope, the 500-metre FAST radio telescope in China.

魏茨莫和他的同事们已经通过机器学习，为一个正在进行的 SETI 项目提供了一个恒星观测的排名，该项目使用的是世界上最大的单碟望远镜，即位于中国的500米口径面射电望远镜。

Hubble Space Telescope Program Manager Douglas Broome delivered the troubling news: “The conclusion we’ve come to is that a significant spherical aberration appears to be present in the optics, in the optical telescope system optics, ” he said.

哈勃太空望远镜项目经理道格拉斯·布鲁姆 (Douglas Broome) 发布了这个令人不安的消息：“我们得出的结论是，学望远镜系统的学元件中似乎存在明显的面像差， ” 他说。