嘿嘿，我剛才查了一下WEB，裏麵出來不少結果，就是沒有數學的 -：)

CTG

From Wikipedia, the free encyclopedia

CTG is an acronym for:

• China Three Gorges Corporation, a state-owned Chinese power company
• Computer Task Group, Incorporated
• Cardiotocography
• Central Economic Society for the Grand Duchy of Poznań (est. 1861, Polish: Centralne Towarzystwo Gospodarcze dla Wielkiego Księstwa Poznańskiego, CTG) - promotion of modern agriculture
• ctg is the notation for Cotangent function, that is used, for example, in Russia
• The IATA airport code for Rafael Nuñez International Airport, in Cartagena, Colombia.
• Center for Technology in Government, a research institution in University at Albany, State University of New York, devoted to improving government and public services through policy, management, and technology innovation.
• IBMs Customer Information Control System Transaction Gateway
• CTG is the ICAO airline designator for Canadian Coast Guard
• CTG is the Clinical Trials Group of the Division of Surgery and Interventional Science at UCL [1]
• CTG is Cambridge Technology Group.
• CTG is the abbreviation for a particular type of power plant, combustion turbine generator

所有跟帖： 

• 等一下，還真的有。。。藏在中間。等會兒。。。 -gendaito- ♂ (0 bytes) () 09/20/2012 postreply 18:55:53

• arctg啦 -i751- ♂ (0 bytes) () 09/20/2012 postreply 18:57:13

• cotangent - 餘切 -yasas- ♂ (0 bytes) () 09/20/2012 postreply 19:08:08