燃气发动机是所有热机中最完美的,因为它结合了蒸汽机和内燃机的优点。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
Without some goals and some efforts to reach them, no man can live. What we call life is a journey, and the journey itself is home.
Curiosity is the engine that drives scientific discovery.
未来就是永恒再加一天。