nodal system graph的用法和樣例：
例句
- Similarly, you could create a waypoint system for paths on a fixed terrain map.
同樣的，你可以創建一個路點系統，對於固定地形場景中的路徑。 - We studied the ground-state-transition of a vertically coupled four-layer single electron QDs system under a magnetic field by the exact diagonalization of the Hamitonian matix.
摘要用精確對角化的方法研究了處於外磁場中四層單電子垂直耦合量子點系統。
