In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced.

文章给出了绘制开环系统对数相频特性曲线的简便方法。

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After analyzing the relations between graph matrices of dual electrical network a method of plotting the latter which is different from usual geometrically drawing method is presented in this paper.

本文从互为对偶的电网络的线图矩阵间关系的分析，得出求作对偶电网络的矩阵法。它异于常用的几何作图法。

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After analyzing the relations between graph matrices of dual electrical network a method of plotting the latter which is different from usual geometrically drawing method is presented in this paper.

本文从互为对偶的电网络的线图矩阵间关系的分析，得出求作对偶电网络的矩阵法。它异于常用的几何作图法。

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