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-down-conversion直接下变频direct drive player system直接驱动重放装置Direct Manipulation Device直接处理方法direct calculation formula直接算法Direct current servo drive全方位直流伺服驱动directivity characteristic方向特性曲线direct-current discharge直流放电direct-drive torquemotor[电] 直推动力矩电动机direct wet chemical method直接湿化学法Direct Multiplexed Control直接多重控制