Mechanical painting

The above is only for drawing,

Knowledge of mechanical foundation, mechanical design, mechanical principle, mechanical manufacturing technology and modern technology, theoretical mechanics, material mechanics, mechanism design, etc.

If you want to learn hydraulic, add hydraulic and pneumatic transmission, fluid mechanics.

I suggest you go to the second-hand bookstore next to the university town to buy it. Where is it cheaper? 3-5 fold, and maybe some students take notes.

Finally, someone better teach you. . Nobody really goes to sit in the university, if you are not very old. Anyway, the teacher will only find out who is missing at most, and will not find more people.