direct cut直接劈directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令direct control encode直接控制编码Direct Lighting Flash直击雷direct estimate grads直接估计梯度direct-current code直流电码direct cooling system直接冷却系统directed biosynthesis定向生物合成Direct-seeding rice直播水稻direct-fired heater明火炉directed perturbation定向微扰direct blood matching直接配血