本文用传统的定性方法和函数方法讨论了调频输入的正弦锁相环路方程的周期解。
In this paper, the periodic solution of sinusoidal PPL equation for FW inputs has been discussed with the traditional qualitative method and Lyapunov functions.
建立该项目的系统动态模型，包括因果环路图和控制方程。
Build a system dynamics model of the project including causal loop diagrams and governing equations.
利用环路积分的方法求解动量方程，进一步求得系统的体积流量。
System volume flux was gained by loop integral the momentum equation.
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