1)commutative ordinal numbers,交换序数2)data exchange program,数字交换程序3)additively commutative ordinal numbers,加性交换序数4)batch data exchange services ,BDES,成批数据交换服务程序5)batch data exchange services,BDES,批数据交换服务程序6)GIDEP Government Industry Data Exchange Program,政府工业数据交换程序