According to the feature of contacting measurement, the dissertation first puts forward the twice-sampling planning method for free-form surface in order to improve measuring efficiency.
根据接触测量的特点，为提高测量效率，本文提出了一种两次采样的曲面数字化规划方法。
Free form surface is most important feature to shape of product such as plane, automobile, motorcycle.
自由曲面是工业产品，尤其是飞机、汽车、摩托车等行业产品外形的重要特征。
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