System Flow
Рет қаралды 2,652
Күн бұрын
@mariococo2626 9 жыл бұрын
Why are you not adding new videos? They are very helpful for me. I want to be a mechanical engineer and change my current job, but you are not adding any new theory. Where can I find as good knowledge source as yours?
Jason Derulo
Рет қаралды 46 МЛН