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本文应用几何光学理论分析熔接头质量不良产生的模变换。对模变换引起的损耗和色散进行了定性分析,得出的结果和实验结果是一致的。
In this paper, the geometrical optics theory is used to analyze the mode change caused by the poor quality of the welded joint. The qualitative analysis of the loss and dispersion caused by the mode change is obtained, and the result is consistent with the experimental result.