在此本研究不探讨光达取样时之误差，而只探讨模塑出來的模型跟光达点云 之间之差異，故以模塑误差(Shaping Error)进行精度评估。计算方法为每屋顶面 光达点云先剔除粗差，剩馀点云再与产生的建物模型计算平均的垂距残差量，当 作模塑误差。
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Since with common calculation method, the calculated value of feeder shaping roller of ultra-accuracy grinder is approximate, it is hard to estimate its calculation error.
超精加工机床辊子装置的计算都具有近似性，很难估算计算误差，讨论了无心超精加工机床加工外凸滚子成形时机床辊子的解析解。
In order to guarantee surface precision of using locus shaping method machining optical parts, the factors of fine grinding machine which affects surface error of part is theoretically analysed.
为了保证用轨迹成型法加工光学零件的面形精度，对精密磨削机床影响工件面形误差的因素进行了理论分析。
Following the analysis of the mechanism for shaping form errors during machining curved surfaces on CNC milling machine, the method for measuring form errors and error source is put forward.
分析了数控铣床曲面加工形状误差的形成机理，提出对形状误差及误差源的测量方法。
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