In the presentationphase of the detail row the workitem'sdatais alreadyobtained, so that the work item's BalanceTimeandExtra-planTimecan becalculatedduringpresentation phase of the row.
在演示阶段工作项的数据已经获得了，这样工作项的BalanceTime与Extra - plan Time可以在行的演示阶段得到计算。