並前往https://www.iem.yuntech.edu.tw/lab/Orlab/courses.files/Inventory%20Theory/Revise2-%E5%AD%98%E8%B2%A8%E7%90%86%E8%AB%96%E9%9A%A8%E5%A0%82%E5%A0%B1%E5%91%8A-%E7%AC%AC%E4%BA%8C%E6%AC%A1.ppt