中文摘要：

基于假设在明显的接触线(ACL ) 的前面有先锋电影，一个模型被建议理解动态弄湿过程并且联系了动态接触角度。现在的模型显示了那一个新尺寸更少特征参数，λ，也影响动态弄湿过程和联系动态接触角度。然而，以前的模型建议动态接触角度仅仅依赖于毛状的数字和静态的接触角度。试验性的调查被进行测量在玻璃，铝和不锈钢表面上移动的硅油的动态弄湿行为。它断定当λ的价值为玻璃，铝和不锈钢作为 0.07， 0.16 和 0.35 被选择时，分别地，试验性的结果在有模型的预言的好一致。而且，有 Str 的模型的比较 ? 试验性的数据显示出的 m 那λ在液体的种类上是独立的。显然，λ应该在动态弄湿过程上作为稳固的表面性质的效果被解释。同时，它在现在的实验被发现 Hoffman-Voinov-Tanner 法律，哪个在很低的毛状的数字是有效的(Ca 吗？1 或θ D 【 10 °) 由 Cazabat 推荐，为更高的接触角度的静止抓住，甚至多达 70 ° 80 °。这被现在的模型解释很好。

英文摘要：

Based on assuming that there is the precursor film in the front of the apparent contact line （ACL）, a model was proposed to understand the dynamic wetting process and associated dynamic contact angle. The present model indicated that a new dimensionless characteristic parameter, 2, attects the dynamic wetting process and associated dynamic contact angle as well. However, the previous model suggested that the dynamic contact angle is dependent＇on the capillary number and static contact angle only. An experimental investigation was conducted to measure the dynamic wetting behavior of silicon oil moving over glass, aluminum and stainless steel surfaces. It concluded that when the value of 2 was selected as 0.07, 0.16 and 0.35 for glass, aluminum and stainless steel, respectively, the experimental results were in good accordance with the prediction of the model. Furthermore, the comparison of the model with Strom＇s experimental data showed that 2 is independent on the species of liquids. Apparently, 2 should be interpreted as the effect of the solid surface properties on the dynamic wetting process.Meanwhile, it is found in the present experiment that the Hoffman-Voinov-Tanner law, which is valid at very low capillary number （Ca 〈〈 1 or 80〈 10°） recommend by Cazabat, still holds for higher contact angles, even up to 70°-80°. This is explained by （he present model very well.