高铁杯里的水为何不洒?

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高铁飞驰,车厢内的小桌上放着满满一杯水。高铁时速迅速攀升,每小时200公里、每小时300公里、每小时380公里甚至更高,但杯子里的水不会洒出一滴。这个犹如"魔术"一般的事实,源自中国高铁技术的轨下基础产品,已达到了创造"魔力"的技术要求。
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