resonant frequency-response curve共振响应曲线
Phase-frequency response curve相频特性曲线
amplitude-frequency response curve幅频响应曲线
By far there are no settled scales or uniform criteria that can be abided by to diagnose winding deformation, while its use is mainly depended on the comparison of the frequency response curve.
在实际的运用中，主要是比较频响曲线之间的差异，凭经验判断绕组是否变形。
参考来源 - 频响法分析变压器绕组变形