In a dynamic system analysis with the method of state variable, when the system is more complex, the selection of state-variable has some difficulties.

用状态变量法分析动态系统时，若系统比较复杂，对于状态变量的选择就存在一定的困难。

youdao

In a dynamic system analysis with the method of state variable, when the system is more complex, the selection of state-variable has some difficulties.

用状态变量法分析动态系统时，若系统比较复杂，对于状态变量的选择就存在一定的困难。

youdao