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 Lift Control System直接起飞控制系统direct electron microscopy直接电镜检查direct cooling pipe system直接空冷管道系统direct acceleration method直接加速度法direct support maintenance直接保障维护direct electric arc furnace直接电弧炉Direct Fire Support Vehicle直接射击支援车direct collection converter直接收集转换器direct current power/DSP直流电源/数字信号处理direct air cooled condenser直接空冷凝汽器