You can write your own graduation project for scientific research experience. Some students write graduation thesis, so this is just a scientific research experience. If you don't write a thesis, you should also explain the research ideas, research methods, research process and research results of this graduation project.
Students' scientific research experience is that you have participated in some topics of school teachers, some of which are vertical and some are horizontal. Vertical is to integrate some data analysis, even some process research, mark some data, perform simple operations on the data, and even draw some conclusions. The horizontal project is generally to go out with the teacher for investigation, or to dock with specific projects, participate in the specific operation of a certain problem, and even give some plans. These all count. In addition, some students have participated in some innovative projects, even some professional competitions, mathematical modeling and other engineering design courses, all of which are scientific research experiences. If you usually help your classmates do some related project demonstrations, or help him make a small illustration, or incorporate some data analysis. These can also be counted.