tributaryadj.纳贡的；从属的；辅助的；支流的n.支流；纳贡者；属国tributary relationship朝贡关系tributary unit pointer从属单元指针tributary examinations贡举tributary drainage area支流流域tributary relationships朝贡关系tributary binary digits辅助二进制数字Tributary Information Letter支合情况通知书tributary payload processing支路净荷处理tributary dependent exchange分支从属交换局tributary system of East Asia东亚朝贡秩序