sand-pile model的用法和樣例：
例句
- The sandpile model offers an alternative route to uncover this self-organizing phenomenon.
沙堆模型的雪崩機制以及模型所刻畫的自組織特性為這項研究工作提供了一條有效途徑。 - In this paper, the application of the sand cone model in supply chains is discussed and new analysis thoughts are provided in the research of the compositeness of supply chain.
摘要通過將沙堆模型應用於供應鏈，提出供應鏈競爭力擴展模型，為供應鏈競爭力問題提出新的分析思路。
