1. Give me an old-fashioned tetragon on a central pivot every time.
每次都给我看一个建在中轴上的四角大楼吧。

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2. And the shapes vary to hexagon, tetragon, acicular and odd different colors are available.
形状有六角形,四角形,长条针形和不规则形状,并有多种颜色可供选择。

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3. Combining with the condition of C-partition and tetragon 2-factor, we give new classes of upper-embeddable graphs.
联系图的顶点划分和四边形2因子的条件,本文给出了新的上可嵌入的图类。

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4. Combining with the condition of C-partition and tetragon 2-factor, we give new classes of upper-embeddable graphs.
联系图的顶点划分和四边形2因子的条件,本文给出了新的上可嵌入的图类。

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