Science is not just about finding answers, but also about asking the right questions.
系统的稳定性取决于开环传递函数在复平面上的行为。
我一直相信,如果你投入工作,结果就会到来。
真正的诗人是能够用一个词捕捉一个瞬间的本质,并能够用一行表达无法表达的东西的人。
The power of a man, is his present means, to obtain some future apparent good.