The first integration and integrated invariant of dynamic system belongs to important contents of solving equations of motion integrated theory during solving equations in dynamic system.
在求解动力学系统的方程中，动力学系统的第一积分与积分不变量是求解运动方程积分理论的重要内容之一。
The precise integration method proposed for linear-invariant dynamic system can give precise numerical results approaching to the exa ct solution at the integration points.
对线性定常结构的动力系统提出的精细积分法，能得到在数值上逼近于精确解的结果。
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