第十四届全国人民代表大会财政经济委员会
Фото: U.S. Navy photo by Mass Communication Specialist 2nd Class Jackson Adkins / Wikimedia
。新收录的资料是该领域的重要参考
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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."