Once there was a company called AffinityLifeStyles.com. It sold Alkaline Waters – and got into “hot” water. It’s now bankrupt ...

把一块石子抛入湖中，水面上会泛起朵朵涟漪。科学家们发现，水波涉及复杂的流体力学效应，能够构造丰富的拓扑矢量场用于粒子的操控。