This effect is called an "illusory contour.
这种效应叫“错觉轮廓”（illusory contour）。
For cold heat preservation effect, 360 degrees outlet, double lid design with straps comfortable in hand, the contour novel, the color bright, intimate design, reside the tourism carrying convenient.
保冷保温效果佳，360度出水口，双杯盖设计，附背带舒适手把，外形新颖，色彩亮丽，贴心设计，居家旅游携带方便。
The method of measuring globular indexing CAM contour with computer aid is introduced. effect of the CAM contour error on index error is analyzed.
介绍了在凸轮检测仪上应用计算机的辅助作用检测弧面分度凸轮廓面的方法，在此基础上介绍了误差分析方法。
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