2025-09-07 00:34 浏览次数 12
阻力系数
the drag of flow in pipes can be greatly reduced by adding a very small amount of high molecular polymer to water.
在清水里加入微量的高分子聚合物,可以大大降低管路阻力。
the differences of coefficient of drag of flow and convection heat transfer between sewage and clean water are analyzed.
并给出与清水相比,流动阻力增大与对流换热系数减小的幅度。