提出了计算离散傅氏级数的折线逼近法，并导出了其幅值计算式。
This paper presents the fold line approximation method of discrete Fourier Series, and conducts calculation formula of harmonics.
本文介绍了一种用五段折线逼近传感器非线性特性的开环补偿方法。
An opening loop compensation method to approach sensor's nonlinearity characteristic by using five straight-lines is introduced in this paper.
首先通过对建筑物边缘进行折线逼近和感知编组，可以得到其顶部大体结构。
We arrange the line segments of (building's) edges to reconstruct the structure of the building roof by means of line closing and perceptual organization method first.
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