讨论了影响短网阻抗标值和阻抗失衡的主要因素，分析了短网阻抗动态变化趋势及其对平衡冶炼的影响。
Discussed the main factors that caused the unbalance of short net static impedance. Analysised the dynamic transfer tendency of short net impedance and its influence on balance smelting.
方法①提高整体电路共模输入阻抗以消除皮肤接触阻抗匹配失衡；
Methods High common mode input impedance of the circuit is used to remove the interference due to imbalance electrode impedance.
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