辅助铁心绕有1 ~ 1000匝的等效测量线圈，从这个铁心上测量到样品的磁通变化。
The flux change in the specimen can be measured from the auxiliary core on which there is an equivalent measuring coil of 1-1000 turns.
这种新的模型既考虑了线圈漏感、又考虑了铁心损耗和分布电容，与实际模型有更大的相似性，最后用仿真结果验证了此模型的有效性。
The new model includes winding leakage, iron losses and distributed capacitance. It has more similarity to the actual model. At last this model is verified by simulation.
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