The surfactant lowers the surface tension and increases the efficiency of the acid.
表面活性剂用来降低表面张力，并提高酸的效率。
The method of measuring kinetic surface tension and its change can reflect the changes in wetting function of a surfactant solution on leaf surface.
利用测定动表面张力及其变化的方法，基本上可以反映表面活性剂水溶液对植物叶面的润湿性能的变化。
Performance of surfactant can be got by pure analysis and experiment, which explores surfactant' s critical micell concentration, surface tension and coal's contact angle.
通过对表面活性剂表面张力、临界胶束浓度及溶液对煤体接触角的理论及实验分析，得到表面活性剂的性能指标。
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