The superhydrophobic surfaces have a very wide range of potential applications in the modern life and industrial production due to their excellent properties.In this paper,a kind of superhydrophobic surface was fabricated by pasting micro-nano particles onto an aluminium or PMMA(polymethylmethacrylate) substrate.The micro-nano particles were obtained by carbon nanotubes winding technology and hydrophobic processing.The pressure drop measurements were carried out in the channel with superhydrophobic surfaces...