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 bonded metal substrate金属敷接陶瓷基板directed graph representation直接图表表示法direct syntax analysis method直接语法分析法Direct Reduction and Alloying直接合金化direct sequence spread signal直扩信号direct centrifugal floatation直接离心浮集法direct-reading spectrometry直读光谱direct preference measurement直接偏好度量direct-coupled test fixture直接耦合试验设备directivity on vertical plane竖直面方向性