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."
He said it should examine their design, height and placement on level five of the stadium, where Claydon fell, and assess whether the area provides "a safe environment" for people attending events.
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Фото: Григорий Сысоев / РИА Новости，这一点在搜狗输入法2026中也有详细论述