n.采购订单
网络 订购单;订单确认;购货合同也称购货订单
A PurchaseOrder will have "date," "customer," and "products" properties.
PurchaseOrder将具有“日期”、“客户”和“产品”属性。
The code in Listing 12 instantiates two objects of the PurchaseOrder class.
清单12中的代码实例化了purchaseorder类的两个对象。
PurchaseOrder describes a transaction where a customer buys one or more products.
PurchaseOrder描述一个客户购买一个或多个产品的事务。
Figure 2 is a flow chart representing a simple state machine for a PurchaseOrder.
图2是一个表示PurchaseOrder的简单状态机的流程图。
The latter is then used to write the PurchaseOrder object instance to the database.
后者随后用于将PurchaseOrder对象实例写入数据库。