描述曲线的直线段的数目由面积法则来决定，并且待处理的曲线将被分割成相等数目的线段。

The number of the segments is determined by an area criterion, and the curves to be matched are represented by an included angle chain of the same length.

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基于线性化等面积法则和小干扰分析方法，提出储能系统抑制电力系统低频振荡的原理和方法。

Based on the linearized equal area criterion and small signal analysis, the Principle and techniques of Energy Storage System(ESS) Damping Power System Oscillations are proposed in this paper.

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用“三分法则”来避免对称在使用中有两种基本方法，第一种：我们可以把画面划分成分别占1/3和2/3面积的两个区域。

First we can divide the image into two distinctive areas which cover 1:3 and 2:3 of the size of the picture.

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