Mechanical engineer

تاریخ : نومبر ۲۰۱۴ - ستمبر ۲۰۱۵

Mechanical engineers design power-producing machines such as electric generators, internal combustion engines, and steam and gas turbines as well as power-using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.