On the afternoon of April 2nd, the Phd Xie Guoxin of Kungliga Tekniskahögskolan gave the "Electrical Contact Lubricant Film Failure, Liquidity and Stability" academic report to our students in the A407 of Mechanical Engineering School. About 100 students who came from Mechanical Engineering School and Material Engineering School attended this academic report. This report was invited by the professor Wang Quan of the Semiconductor Sensing Technology Institute and presided by the professor Lin Zhiyong of the Mechanical Engineering School.