连接线称为弧，笛卡尔坐标系统中的点称为节点。

The connecting lines are arcs, and the points within the Cartesian coordinate system are nodes.

youdao

连接线称为弧，笛卡尔坐标系统中的点称为节点。

The connecting lines are arcs, and the points within the Cartesian coordinate system are nodes.

youdao