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DDA是底特律柴油机分部和阿里逊分部两个单位的字首的缩写。目前DDA是美国通用汽车公司(GM)下属的三十三个分部(Division)之一,是GM下属专门从事柴油机、燃气轮机和液力自动变速箱生产的专业工厂。 DDA的前身是GM下属的密执安州底律市的底特律柴油机分部(Detroit Diesel Division)和印地安那州印地安那波里斯的阿里逊分部(Allison Division):该两分部于1970年合并,合并后统称底特律柴油机阿里逊分部,即DDA。底特律柴油机分部主要生产各种系列的柴
DDA is the abbreviation of both the Detroit Diesel Division and the Allison Division. Currently, DDA is one of the thirty-three divisions of General Motors (GM) of the United States. It is a specialized factory of GM specialized in the production of diesel engines, gas turbines and hydraulic automatic transmissions. The predecessor of DDA was the Detroit Diesel Division of GM’s Detroit, Michigan, and the Allison Division of Indianapolis, Indiana: the two divisions were in 1970. Annual merger, collectively known as the Detroit Diesel Allison Division, or DDA. The Detroit Diesel Division mainly produces various series of diesel