在工程领域，材料电导率与磁导率的测量具有极为重要的应用价值.本文将长直圆柱体棒放置于低频RLC电路的电感线圈内，通过分析电路功率以及圆柱体棒磁化过程中所消耗的功率，推导出插入圆柱体棒前后，电感线圈阻抗变化与磁导率、电导率之间的关系式.借助锁相放大器精确测量电感电压，随后运用所得到的关系式计算出圆柱体棒的电导率与磁导率.经过多种材料的实验验证，充分证实了该计算模型的准确性.此研究为材料电磁学性能的快速测量提供了新的思路.

The measurement of the electrical conductivity and magnetic permeability of materials has important applications in engineering. In this paper, a long straight cylindrical rod is placed inside the inductor coil of a low-frequency RLC circuit. By analyzing the power of the circuit and the power consumed by the magnetization of the conductor rod, the relationship between the change in the impedance of the inductor coil before and after insertion and the magnetic permeability and electrical conductivity is obtained. After accurately measuring the inductance voltage with a lock-in amplifier, the electrical conductivity and magnetic permeability of the cylindrical rod are calculated using this relationship. Through verification with multiple materials, the correctness of this calculation model is proved, providing a new idea for the rapid measurement of the electromagnetic properties of materials.