研究相对运动动力学系统的Lagrange对称性.给出系统Lagrange对称性的定义和判据.找到这类对称性导致的守恒量的条件和形式.举例说明结果的应用.
This paper studies the Lagrange symmetry of a dynamical system of relative motion. The definition and the criterion of the symmetry of the system are established. The condition under which there exists a conserved quantity and the form of the conserved quantity are obtained.