nodal basis

例句：

1. 1. The nodal point of the system is at the intersection of the two branches.
   系统的节点位于两条分支的交点处。
2. 2.The nodal line divides the graph into two parts.
   节点线将图形分成两部分。
3. 3. The nodal structure of the plant is crucial for its survival.
   植物的节点结构对其生存至关重要。