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 lateral jet control直接侧向力控制direct air cooling turbine直接空冷汽轮机direct debit authorization直接付款授权书direct refusal speech acts直接拒绝言语行为direct-current amplifier直流放大器direct-writing color VCG彩色直描式心向量图机direct colorimetric method直接光度法direct-heated thermistor直热式热变电阻器direct viewing memory tube直观存储管direct-on-line starter直接在线起动器