13 is greater than 17. According to the results of today's Science official website, the defense ratio of joint funds in 2022 is 13 17. The joint fund is a kind of project funded by the National Natural Science Foundation, which is used to promote cooperation and exchanges between different disciplines. In 2022, the Ministry of Engineering and Materials Science * * * accepted eight kinds of applications for joint fund projects, and some R&D joint fund projects of the provincial science and technology department passed the defense.