说明：  工作流控制数据（Workflow Control Data）工作流执行服务/工作流机通过内部的工作流控制数据来辨别单个过程或活动实例的状态。这些数据由工作流执行服务/工作流机控制。用户、应用程序或其它的工作流机/工作流执行服务不能对其进行直接读写操作，它们可以通过向工作流执行服务/工作流机发送消息来获得工作流控制数据的内容。
(Workflow control data(Workflow Control Data)Workflow service/Workflow Control Data for the service/Workflow controlData, the process of the workwork process or operation instances in the workworkflow control.It's reading., you can can can can can can can can can can can can can can can can can can can can can can can can can can be the works the service/works set message to the works the data content.)