directnessn.直接；直率directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令Direct propagation tree直接传播树Direct Attached Storagen.直接附加存储direct fuzzy clustering聚类分析direct digital computer直接数字计算机direct-driving clutch直接传动离合器direct-injection pump直接喷射式燃料泵direct designing method直接设计法direct and the indirect奇正direct-access inquiry直接存取提问direct-drive scanning[电] 直推动扫描