提出了材料表面接触电阻的测试方法，测试了几种典型材料的表面接触电阻；
The method is presented to test DC contact resistance of shielding materials' surface.
表面接触电阻是材料的固有属性，是材料本身的电性能所决定的，可作为材料屏蔽效能的衡量标准。
The resistance is mental nature property, which is determined by material's performance, and it can act as standard of material's shielding effectiveness.
前者是几个不连续的小幅值电流脉冲，主要是使表面接触均匀化，接触电阻稳定在一个较小值；
The former consists of several discontinuous minor amplitude current impulses, which is used to uniformize contact area and to make contact resistance stabilized on a small value;
采用该方法可以区分触头表面污染状态，并根据接触电阻的变化规律及其变化值的大小评价触头接触可靠性。
Based on the new method the distinguish could be made between "clean" contact and "unclean" contact, and we should predicate the contact reliability of relay according to the value of contact...
采用该方法可以区分触头表面污染状态，并根据接触电阻的变化规律及其变化值的大小评价触头接触可靠性。
Based on the new method the distinguish could be made between "clean" contact and "unclean" contact, and we should predicate the contact reliability of relay according to the value of contact...
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