For the 3-dimension geometric figures sampling, the first sampling-position was most likely located at the outline parts of the figures, and rarely at the center of gravity of the figures.
立体几何图形的取样策略研究中，被试的首视点落在轮廓部位的概率最大，落在重心的概率极小。
From the viewpoint of geometric matching, parts' outline similarity matching is the most important in the process.
从几何匹配的角度来看，零件外轮廓的相似性匹配是最重要的。
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