The purchase order processing service is specified by the Purchasing service interface (shown in Figure 4), which includes the following capability (or operation).
购买订单处理服务是由Purchasing服务界面指定的(如图4所示)，它包括了以下的功能(或者操作)。
The purchase order processing service is specified by the Purchasing service specification (also shown in Figure 4) which includes the following capability (or operation)
定购单处理服务由Purchasing 服务规范指定（请参见图4），该规范包括如下功能（或者操作）
The purchase order processing service is specified by the Purchasing service specification (also shown in Figure 4) which includes the following capability (or operation)
定购单处理服务由Purchasing 服务规范指定（请参见图4），该规范包括如下功能（或者操作）
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