In this paper, a simple method of calculation is given, the method is common and can solve some questions of central force field of spherical symmetry.
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
The central axis sets the symmetry of the building to pay homage to the existing heritage building.
中轴确定建筑的对称性，向原有传统建筑表示敬意。
3
The decline of brightness from its central peak along this axis of symmetry is different in the opposite directions.