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。

youdao

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。

youdao

This paper has proved that a plane curve cis a circle if and only ifc is the locus of a moving point that has a constant second power average of distances from n fixed points.

本文提出了确定内燃机配气机构刚度的三种数据处理方法，并对处理结果作出了分析、比较，确认二次刚度平均法是一种较好的实用方法。

youdao

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