奈奎斯特准则提供了一种图形方法来确定闭环系统的稳定性。
Don't worry about the world coming to an end today. It's already tomorrow in Australia.
Ambition leads me not only farther than any other man has been before me, but as far as I think it possible for man to go.
If you want to go fast, go alone. If you want to go far, go together.