directpathn.直接波束directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct current tachogenerator直联速发电机direct internation investment对外直接投资direct and indirect bilirubin直接和间接胆红素(质)direct her whole attention tovt.注意(使想到；考虑；采取行动)direct current electrotherapy电场direct access display channel直接存取显示通道Direct product of convex sets凸集合的直积direct-current series motor直流串励牵引电动机direct extraction by methanol甲醇一步提取法direct transfer rate constant直接转移率常数