In the ocean of science, everyone is a student, there is always something new to learn.
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。
If a lion could talk, we could not understand him.
合作是应对全球能源挑战的关键。
爱不仅是一种情感,它也是一门艺术。