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."
Kevin Church/BBC News
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但必须强调的是，中国游艇产业的瓶颈，并不在于“造不造得出来”。以当下中国制造的能力而言，大飞机能够自主研制，航母可以下水，豪华邮轮已经实现交付，造一艘技术复杂度远低于上述装备的游艇，并不存在“技术不可达”的问题。游艇并非中国制造的能力短板。
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