非常感谢审稿人的意见。首先，本文的样本数据是满足要求的。其次考虑到OL

Thank you very much for the comments of the reviewers. First of all, the sample data in this article meets the requirements. Secondly, considering the mechanical loss and service life of the OLTC, this article starts from different perspectives in the case of a small sample, and performs feature extraction, fusion and feature selection on the OLTC vibration signal to complete the OLTC mechanical fault diagnosis. At the same time, literature [13] also completes the fault diagnosis of OLTC by extracting the characteristics of the vibration signal of the OLTC under the condition of a small sample.

Thank you very much for the comments of the reviewers. First of all, the sample data in this paper is to meet the requirements. Secondly, taking into account the mechanical loss and service life of OLTC, in the case of small samples, from different perspectives, the vibration signal of OLTC is characterized extraction fusion and feature selection is completed to complete the diagnosis of OLTC mechanical fault. At the same time, the literature is also in the small sample conditions, through olTC vibration signal characteristic extraction to complete the fault diagnosis of OLTC.

Thank you very much for your comments. First of all, the sample data in this paper meet the requirements. Secondly, considering the mechanical loss and service life of OLTC, in this paper, in the case of small samples, from different angles, feature extraction fusion and feature selection are carried out to complete the mechanical fault diagnosis of OLTC. At the same time, reference [13] also completes the fault diagnosis of OLTC by extracting the vibration signal characteristics of OLTC under the condition of small samples.<br>