The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
通过回归分析的方法对标准分级道路功率谱密度与相应国际平整度指数之间的关系进行了研究。
The surface degree of finish is important index of production quality, discussed surface roughness of hot strip, effect and control way of cold roll process on finished product.
不锈冷轧带钢表面光洁度是重要的产品质量指标，讨论了热轧带钢的表面粗糙度和冷轧工艺对成品表面光洁度的影响及控制方法。
Workpiece surface roughness is an important technical index in evaluating the ground quality of belt grinding.
砂带磨削中，表面粗糙度是被磨工件表面质量的一个重要的技术指标。
Relief, roughness and variance coefficient in elevation are main index in macro scale.
在宏观尺度上，以地形起伏度、地形粗糙度、地形高程变异系数为主。
The road roughness is an important index evaluating pavement performance.
路面平整度是评价路面使用性能最主要的一项指标。
Border irrigation current advancement process model plays an important role to determine irrigation technical index, average field infiltration rate and roughness coefficient.
畦灌水流推进过程计算模型对确定灌水技术要素、田间平均入渗率和糙率有十分重要的作用。
Road roughness is an important index in pavement performance evaluation, and it relates to three factors such as pavement, cars and persons, especially human body comfort.
平整度在路面使用性能评价中占有重要地位，它涉及到路面、车辆和人体三方面因素，特别是人体舒适性是其中重要的环节。
Shanghai Composite Index is an important index for Chinese stock market, and we apply the Least Squares Method with roughness penalty to smooth its historical data, using spline functions.
上证综合指数是股票市场的一个重要指标，我们采用样条函数，将带光滑参数的最小二乘法应用于拟合该指标的历年数据。
Results show that with the increase of the irradiation time the density of the film increases while surface roughness decreases, and the refractive index increases.
结果表明：随着曝光时间的延长，膜的致密性增加，表面粗糙度下降，折射率增大。
In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.
文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。
In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.
文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。
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