Demonstrate 14 dynamic principles of the main components of urban rail vehicles in a three-dimensional manner, such as the principles of air conditioning refrigeration and heating, the working principle of the pantograph, and the working principle of the bogie.

The principles can be rotated 360 degrees and scaled vectorially in a virtual environment, and the names of the components of each principle can be displayed.

The display process of the entire principle is in a dynamic three-dimensional mode, which is convenient for teachers and students to view from a 360-degree perspective.