advanced purchasing system的用法和样例：
- Narasimhan, R. and J.R. Carter (1998)Environmental Supply Chain Management,Center for Advanced Purchasing Studies,Tempe, Arizona.
- In this paper, the purchasing system of unique purchaser and unique suppler was analyzed based on cooperate game.
- Is there a discount for a 14-day advance purchase?
- It is necessary to think about the furtherance of government purchase system.