本文从液压元件职能符号的组成规则(即起源)的角度谈起,通过对溢流阀、减压阀和顺序阀等三种常见液压元件的职能符号进行对比分析,归纳总结出一种液压元件职能符号的记忆方法——对比分析记忆法。并由此推广到其它液压元件职能符号的记忆。 In this paper, the composition of the hydraulic components from the functional rules (ie, the origin of) point of view, through the relief valve, relief valve and sequence valve functions of three common symbols of hydraulic components were compared and analyzed, summed up a hydraulic components Means of Memory of Functional Symbols - Comparative Analysis of Memory Methods. And thus extended to other hydraulic components function memory.