There are too many to remember, so just memorize the following few for now. By the way, the Collaborative Decision Making section of the Air Traffic Management Bureau of the Civil Aviation Administration of China website contains many excellent materials with high reference value.

CDM (Collaborative Decision Making) Multi-Airport Departure Clearance Collaborative Decision Making System

STD (Scheduled Time of Departure) Scheduled Door Closing/Opening Time, The flight schedule time approved in the airline’s application

SOBT (Scheduled Off Block Time) Scheduled Off Block Time

COBT (Calculated Off Block Time) Calculated Off Block Time, The estimated off block time calculated by the CDM system based on CTOT and VTT

EOBT (Estimated Off Blocks Time) Estimated Off Block Time, Content of Data Item B in Field 13 of the FPL message

TOBT (Target Off Blocks Time) Target Off Block Time, The earliest time the airline can complete ground handling tasks

CTOT (Calculated Take Off Time) Calculated Take Off Time, The estimated takeoff time provided by the CDM system through comprehensive calculation

VTT (Variable Taxi Time) Variable Taxi Time, The required taxi time before takeoff/inposition calculated by the CDM system based on stand, departure Runway, taxi route, traffic conditions, etc.

TSAT (Target Start-Up Approval Time) Target Start-Up Approval Time, The target start-up time calculated by the CDM system based on CTOT and VTT and issued by Air Traffic Control

ASBT (Actual Start Boarding Time) Actual Start Boarding Time, The moment the airline actually starts organizing passengers to board

ARDT (Actual Ready Time) Actual Ready Time, The moment the airline actually completes ground handling tasks such as passenger boarding, closing all doors, Jet Bridge removal, and tow truck positioning)

ASAT (Actual Ready Time) Actual Start-Up Approval Time, The time allowing start-up and pushback given by Air Traffic Control based on actual operational conditions

http://www1.atmb.net.cn/CD_web/UploadFile/2013052414022113.pdf http://www1.atmb.net.cn/cd_web/UploadFile/2013052316010614.pdf http://www.gatwickairport.com/globalassets/documents/passengers/acdm/flightplan_procedures_v2.2.pdf http://golfcharlie232.blogspot.jp/2015/05/airline-pilot-real-life-vs-fsx.html