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本文从锁相环的基本原理出发对“用摄动法定量研究二阶锁相环的非线性性能”一文中存在的几个问题,提出不同意见进行商榷。
Based on the basic principle of phase-locked loop, this paper discusses some problems existing in the article “Using the perturbation method to quantitatively study the nonlinear performance of second-order phase-locked loop” and puts forward different opinions.