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."
花江峡谷大桥，“横竖都是世界第一”。通车后的首个春节，“桥梁观光+户外体验+民族文化”的新业态，带火桥外人家——贵州贞丰县小花江村。
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“Chase your talents, not your dreams,” Witherspoon said.
千亿、百亿和十亿研发投入规模区间企业合计379 家，合计研发投入约1.94 万亿元，企业数量占比不到一成，却贡献了整体研发投入的七成以上（71.52%）。这一占比较上年（70.68%）继续增加。
Трамп высказался о непростом решении по Ирану09:14