In this paper, a simple method of calculation is given, the method is common and can solve some questions of central force field of sphericalsymmetry.
本文给出了较简便的运算方法，该方法具有一般性，能解决一类球对称中心力场的许多问题。
2
By replacing the fifth postulate in the preceding paper with the condition of sphericalsymmetry of space we again obtain the Friedmann universe in relativistic cosmology.
将前文中第五个假定改为“空间具球面的对称性”后我们仍遵出费烈特猛宇宙。
3
Our results indicate that the energy valley of conduction band of Ge is not lying in the center of Brillouin zone and the constant energy surface possesses non-sphericalsymmetry.