被测定物 ( Measuring Object ) ：Standard diffusing surfice 测定项目(Measuring Items) ：cd/㎡、rlx、LV unit selection
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According to the new national gear standard, three deviation-measuring items must be included in the checkout of single gear: profile deviation, helix deviation and pitch deviation.
按照新的国家齿轮标准规定，对于单个齿轮必须检验三个偏差项目：齿廓偏差、螺旋线偏差和齿距偏差。
The system has features of many measuring items , fast analysis , high accuracy and convenience in operation.
本系统具有测量项目多、分析速度快、准确度高、操作简便等特点。
The paper has provided theoretical basis and computation method of the four measuring items of microstructure for digital image processing by studying quantitative metallography.
通过研究定量金相技术为半固态微观组织的固相率，晶粒大小，晶粒尺寸分布和形状分布的图像处理提供了理论依据和计算方法。
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