N on linear calibration and finding circle edge were introduced to measure the images acquired.

系统选用背光源照明，采用非线性校准及查找圆边的方法对采集到的图像进行测量。

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By means of Cauipotential lines, exact formulas for calculating the characteristic impedance of the coaxial systems consisting of a circle and a N- resular polygon are derived in this paper.

本文利用等位线导出了截面由圆和正N 边形组成的同轴线特性阻抗的严格计算公式。

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Mid-afternoon, and main stage security have built themselves into a reinforced semi-circle as if preparing for war as Australian drum 'n' bass metalers Pendulum arrive - it's officially their 150th show.

BBC: Newsbeat - Download festival 2009 reviewed