That the sandwich stands still, has no speed in orbit anymore.

意思是三明治不动，在轨道中没有速度。

youdao

If you know r, then you can calculate the speed in orbit.

如果知道R，就能，计算轨道里的速度。

youdao

Electrons orbit at a very speed around the nucleus.

电子以极高速度绕原子核运转。

youdao

Electrons orbit at a very speed around the nucleus.

电子以极高速度绕原子核运转。

youdao