From the perspective of the development of mechanics in 100 years, mechanics is a science dealing with macroscopic problems, including relativity,

But it does not include quantum theory. It uses theory to solve practical problems through concrete digital calculation. These problems have been solved in the past.

All come from engineering technology, but also from natural science research, such as the movement and development of galaxies.

Mechanics is the numerical solution of practical problems, of course, using electronic computers. This is the difference between two aspects: first,

There seems to be no upper limit on the requirements for computers; Today, billions of computers flip cards every second, and mechanics is happy.

Welcome to the future supercomputer with trillions of FLOP per second. This also needs continuous research and improvement.

Mechanical work will also encounter moments when you can't think that you are quite sure of the theoretical methods to solve practical problems. What should we do?

At this time, it is necessary to design an experiment to verify the key parts of the theory, such as designing supersonic combustion stamping now.

The engine (scramjet) will be tested in deflagration wind tunnel. Its experimental time is less than (110) s, but it is enough to verify the theory.

Once you have mastered the theory, you can solve practical problems clearly.

To sum up, today's mechanics is a subject that uses computer calculation to answer all macro-practical scientific and technical problems.

The calculation method is very important; Another auxiliary means is to design experiments skillfully.