Expansion model的用法和樣例：
例句
- Experiment results show that good retrieval effectiveness can be achieved by adjusting the parameter of the Bayesian networks used in our model.
實驗結果表明通過進一步調節擴展模型中的參數，可以獲得良好的檢索效果。 - 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。
