系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。

The best discoveries are those that raise more questions than they answer.

Tomorrow will be better for as long as America keeps alive the ideals of freedom and a better life.

The writer’s task is to bear witness.

我们农业成功的真正标准将是我们留给土壤的，而不仅仅是我们从中获取的。