第一积分 meaning in Chinese

first integral

A method for generate first integral of hamilton system
系统第一积分的一种方法
First integral and integral invariants of relativistic birkhoff systems
系统的第一积分和积分不变量
Establishment of the first integration and integral invariants of the relativistic birkhoff system
系统的第一积分与积分不变量的构造
Connexion of first integrals with particular solution to the variational equations for birkhoffian systems
系统的第一积分与其变分方程特解的联系