You will understand two color pattern of the Left, the triangle is smooth coloring, with the quadrilateral plane coloring.
你将理解两种着色模式，在左图中，三角形用的是光滑着色，四边形用的是平面着色。
With the materials, is divided into acrylic and urea two, acrylic materials relatively light, color and pattern change is more also, suitable for long time use;
以材质分，则分成压克力和尿素两种，压克力的材质比较轻，颜色跟图案的变化也比较多，适合长时间的使用；
The paper presented a plan of two-dimensional servo four color pattern identification, and its boundary treatment techniques, wh.
为此，提出了二维伺服四色识图原理及边界处理技术，克服了上述不足。
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