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。

youdao

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。

youdao

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。

youdao

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。

youdao