For example, if this was the unit sphere then I would just put x, y, z.

例如，对于一个单位球面，仅用x, y, z计算就可以。

youdao

We obtain two formulas about the covariant derivative of the coordinate functions on the unit sphere in Eucdidean space.

得到了欧氏空间中，单位球面上坐标函数关于某一特定标架场的协变微分的两个等式。

youdao

Moebius second fundamental form is important Moebills invariable on the unit sphere of submanifolds, in this paper, we classify the surface in s ~ 3 with semi-parallel Moebius second fundamental form.

Moebius第二基本形式是单位球面上子流形的重要的Moebius不变量，本文给出了S3中具有半平行Moebius第二基本形式的曲面的分类。

youdao

Las Vegas, Nevada (CNN) -- Pioneer became the latest company to jump on the car-tech bandwagon on Wednesday when it unveiled a new car stereo unit that has maps with local searches, a "music sphere" and tunes from the Internet radio site Pandora.

CNN: Pioneer to launch high-tech car stereo