今天偶然发现，Windows10的服务中有一些以“_”+字符串结尾命名的服务，请问字符串是怎么来的？为什么会这么命名？
已知涉及到的服务有：
AarSvc
BcastDVRUserService
BluetoothUserService
CaptureService
cbdhsvc
CDPUserSvc
ConsentUxUserSvc
CredentialEnrollmentManagerUserSvc
DeviceAssociationBrokerSvc
DevicePickerUserSvc
DevicesFlowUserSvc
MessagingService
OneSyncSvc
PimIndexMaintenanceSvc
PrintWorkflowUserSvc
UdkUserSvc
UnistoreSvc
UserDataSvc
WpnUserService
