实际任务工时
Sum( Filter( Descendants([Issue].CurrentMember,[Issue].[Issue]), [Measures].[Hours spent]>0 ), ([Measures].[Hours spent], [Time].CurrentHierarchy.DefaultMember) )
预估任务工时
Sum( Filter( Descendants([Issue].CurrentMember,[Issue].[Issue]), [Measures].[Hours spent]>0 ), ([Measures].[Original estimated hours], [Time].CurrentHierarchy.DefaultMember) )
任务工时偏差
[Measures].[实际任务工时]/ [Measures].[预估任务工时]