direct jet直射式directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令Direct Dedicated Voice Network直接专门的声音网direct current watt hour meter直吝时计direct current speed regulating直流调速directing control to system job定向控制到系统作业direct driving friction welding连续驱动摩擦焊Direct immunofluorescence assay直接免疫荧光direct distance dialing network长途直接网络direct store and forward lockup直接存储和正向闭锁directivity on horizontal plane直接指向水平面direct in-situ polymerization一步原位聚合