Roughening helps alleviate this problem and ensures better traction .

粗糙有助于缓解这一问题，并确保更好的牵引力。

Surface roughening and growth mode transition of polycrystalline thin films .

多晶薄膜表面粗化与生长方式转变。

At the low point of a wave , more air touches the surface of the ocean , roughening the otherwise smooth water .

在波的最低点，较多的空气接触到海面，使原本平静的水面发生震荡。

Based on polymer surface modification and roughening method , the pp surface wettability against water was improved significantly . Film-forming ratio was increased from about 40 % to 95 % .

利用聚合物表面改性和表面粗糙方法，大幅改善了pp表面对水的润湿性，成膜率从约40%提高到约95%。