中文摘要：

根据电磁场与电磁波理论,对金属材料的屏蔽效能在各种不同条件进行分析、计算和比较,得到了一定的结论,它极大地方便了电磁兼容技术的工程应用和实践.对于实际工程应用具有一定的指导价值.

英文摘要：

According to the theory of electromagnetic field and wave,the shielding efficiency of metal materials were analyzed,calculated and compared in different conditions. Certain result was made,which greatly improves the engineering application and practice of electromagnetic compatibility technology. The research has certain guiding value to practical engineering application.