We're all familiar with the high-pitched squeak of basketball shoes on the court during games, or tires squealing on pavement. Scientists conducted several experiments and discovered that the geometry of the sneakers' tread patterns determines the squeak's frequency, enabling the team to make rubber blocks set to specific frequencies and slide them across glass surfaces to play Star Wars' "Imperial March."
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在2022年春季学期中央党校(国家行政学院)中青年干部培训班开班式上,习近平总书记深刻指出:“树立和践行正确政绩观,起决定性作用的是党性。”