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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."
。关于这个话题，safew官方下载提供了深入分析
More like this storyOver-40s offered free blood pressure checks，更多细节参见同城约会
Фото: Дмитрий Коротаев / Коммерсантъ。业内人士推荐heLLoword翻译官方下载作为进阶阅读