centre of mass

Discusses the dynamic theorem of mass system relative to centre of mass moving in a plane.

论述了质点系相对于随质心一起作平动的座标系的动力学规律.

The effects of the motion of atomic mass centre and field mode structure on the dynamics of the field phase in the Jaynes Cummings model are discussed by means of the Hermitian phase formulas of Pegg and Barnett.

运用Pegg-Barnett的厄米相位公式，研究了J-C模型中原子质心运动和场模结构对场相位动力学的影响。

They are polygons, specified by the coordinates of a centre of mass and their vertices.

它们均由多边形表示, 并给定其重心和各顶点的坐标.

The results show that the motion of atomic mass centre leads to the periodic evolution of the dynamics of the field phase and this period depends on the field mode structure parameter.

结果表明：原子质心运动导致场相位动力学的周期性演化，场模结构参数决定其周期的大小。