directableadj.可指引的；可指挥的；可操纵的directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct air - cooled unit直接空冷发电机组direct corticospinal tract皮质脊髓前束direct visual storage tube直视存储管direct electromotive force直流电动势direct modulationtechnique直接调制技术direct the attention of tovt.促使 ... 注意(引起对 ... 的注意)direct vacuum tube current[医] 直接真空管电流direct substitution method直接代入法direct sequential decoding直接序列解码direct precedence relation直接优先关系