directline直通行directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct supply of electric power电力直供direct current Josephson effect直流约瑟夫森效应direct alkaline recovery system直接碱回收系统direct detection of groundwater直接找水directed diffusion routing tree有向传输路由树direct debt and overlaping debt[法] 直接债务上重叠债务direct marketing by integration产销结合的直接销售direct reporting network system网络直报系统direct-excitation transmitter直激发射机direct current speed regulation直流调速