inventory model的用法和樣例：
例句
- It constructs an integrated inventory model including one supplier and one retailer.
摘要建構包含一個供應商和一個零售商的整合庫存模型。 - After that, by decomposing the multi-item joint replenishment problem to multiple single item inventory models, we derive the expression of the retailer cost analytically.
隨後將多產品聯合訂貨問題分解成多個單產品的庫存模型進行分析，給出了銷售商總成本的解析表達式。
